US998 calling issue - LG V30 Questions & Answers

Hey guys,
After using my V30 for a few days I realized I couldn't make or receive calls. This is weird because everything else works. The carrier is cricket.
I suspect a VoLTE configuration issue, but I don't know enough to dig into that.
Here's everything I know:
Old phone works with same SIM
SMS, MMS, and LTE data all work on V30
when placing calls, phone just says "calling" for 15-30s before showing "call ended"
when receiving calls, caller hears ring before going to voicemail
phone is new H931 frankensteined to US99820b/20h (have tried both)
Have tried reboot/reset several times
Cricket support was not much help and I don't have high hopes for LG support. Anyone experience a similar issue with their V30 or know enough about the secret menu to troubleshoot?
Thanks

I have had the US998 for 9 months and have had similar issues. I also have Cricket and for the first month, before I even rooted it, I had great service with the phone. Then I unlocked the bootloader and rooted it... Ever since I've had poor reception with the phone almost anywhere, especially when indoors. I have fine 4G internet speeds but have to go outside to make any phone call. I'm currently on rooted stock Pie through TWRP zip but I've tried countless Oreo roms, stock included, but the same problem has been with the phone for the past 7 months. I've tried every APN setting there is but keep in on global normally. Is it possible that we've messed up our modem partition? I'd think Cricket would use the same LTE bands as AT&T but I could be wrong.

johnnokomis said:
I have had the US998 for 9 months and have had similar issues. I also have Cricket and for the first month, before I even rooted it, I had great service with the phone. Then I unlocked the bootloader and rooted it... Ever since I've had poor reception with the phone almost anywhere, especially when indoors. I have fine 4G internet speeds but have to go outside to make any phone call. I'm currently on rooted stock Pie through TWRP zip but I've tried countless Oreo roms, stock included, but the same problem has been with the phone for the past 7 months. I've tried every APN setting there is but keep in on global normally. Is it possible that we've messed up our modem partition? I'd think Cricket would use the same LTE bands as AT&T but I could be wrong.
Click to expand...
Click to collapse
I have no problems with AT&T signal on my rooted US998 V30+.
No, you haven't messed up your modem partition.
I have AT&T Prepaid. The only difference between that and Cricket is I have actual AT&T data servers (vs Cricket data servers) and my speeds are not capped. You're never going to see the speeds I have, because AT&T caps Cricket at 8mbps.
Why are you using "Global"? You should be using settings similar below: GSM/HSPA (sometimes called WCMDA)/LTE. Don't confuse "WCDMA" with "CDMA". They are totally different. WCDMA is HSPA, if you don't see HSPA in your settings.

GinR said:
Hey guys,
After using my V30 for a few days I realized I couldn't make or receive calls. This is weird because everything else works. The carrier is cricket.
I suspect a VoLTE configuration issue, but I don't know enough to dig into that.
Here's everything I know:
Old phone works with same SIM
SMS, MMS, and LTE data all work on V30
when placing calls, phone just says "calling" for 15-30s before showing "call ended"
when receiving calls, caller hears ring before going to voicemail
phone is new H931 frankensteined to US99820b/20h (have tried both)
Have tried reboot/reset several times
Cricket support was not much help and I don't have high hopes for LG support. Anyone experience a similar issue with their V30 or know enough about the secret menu to troubleshoot?
Thanks
Click to expand...
Click to collapse
1) Check your APN. Make sure it's set to what you need for Cricket. Google Cricket APN.
2) You are not currently using AT&T firmware, so you will not have VoLTE. You need to turn VoLTE off in the settings if you see it. AT&T only allows certain phones on Cricket to use VoLTE -- and you currently have "US998", not H931.
If you see VOLTE setting turn it off, see if your phone calls can be made? Trying to use the VoLTE setting when you aren't allowed VoLTE will cause phone calls to fail.
If you bootloader unlock your phone and re-flash the AT&T H931 TWRP flashable zip, it's possible you get VoLTE IF Cricket is allowed VoLTE on H931 phones. Many AT&T postpaid customers are using rooted, bootloader unlocked H931 phones and have VoLTE because they flash to the H931 TWRP flashable zip.
What was your previous phone? Just saying your "old phone" tells us nothing whatsoever. Was it AT&T branded?
Are you sure you had VoLTE on your old phone with Cricket? Or you just assume you did? If it was an iPhone, then it's possible you had VoLTE on Cricket. If it wasn't, then you may just be assuming you did. I'm not current with the phones which have VoLTE with Cricket, I just know it has been very few.
Because AT&T keeps VoLTE as a premium feature -- although they have been giving it to more phones recently. But still usually with AT&T branded phones (which my US998 V30+ is not). I do not have VoLTE on AT&T Prepaid with my US998 -- and I couldn't care less.
You don't actually need VoLTE. When you make a phone call your phone can drop down temporarily to HSPA while you have the phone call and you will still have data. When the phone call finishes your phone will then return to LTE.
I have AT&T Prepaid, as does my wife and my mother -- and all our US998 V30/V30+ phones do exactly that. We do not have VoLTE and don't care.

See screenshot. If you find this setting, turn off VoLTE see if you can make/receive phone calls until you can flash the H931 TWRP flashable zip. But also find out if AT&T H931 can use VoLTE on Cricket.
LG V30 AT&T H931-20Q ROM
https://forum.xda-developers.com/lg-v30/development/lg-v30-att-h931-20f-rom-t3872926

Thanks for the detailed response.
My previous Cricket LG M327 definitely has VoLTE on Cricket per this list:
cricketwireless[dot]com/support/great-big-network/compatible-phones.html
There's also a settings option for it, and I can tell the difference between calls with/without.
If AT&T considers it a premium feature, you're probably right that it's limited to branded phones.
On my V30 I don't see an option for VoLTE in the option menu. I also don't have nearly as many options for mobile network mode as you do.
I will try flashing H931 to see if that changes anything.

GinR said:
Thanks for the detailed response.
My previous Cricket LG M327 definitely has VoLTE on Cricket per this list:
cricketwireless[dot]com/support/great-big-network/compatible-phones.html
There's also a settings option for it, and I can tell the difference between calls with/without.
If AT&T considers it a premium feature, you're probably right that it's limited to branded phones.
On my V30 I don't see an option for VoLTE in the option menu. I also don't have nearly as many options for mobile network mode as you do.
I will try flashing H931 to see if that changes anything.
Click to expand...
Click to collapse
Check your APN also?

ChazzMatt said:
Check your APN also?
Click to expand...
Click to collapse
I did check that. All correct.
I went to try it this morning and suddenly it worked on US99820b. I refurbished to 20h which is the version I want and switched to LTE/GSM network mode and it works.
Thanks for your help.

It worked for a day or so, then stopped working again. I think the issue is that Cricket is trying to provision the phone for VoLTE, but then their backend won't actually allow this IMEI to make VoLTE calls. I obtained an active SIM on another carrier and confirmed that the handset can make/receive both VoLTE and non-VoLTE calls.
Do any of you guys know how to disable VoLTE via adb/hidden menus? There is no option in the normal Settings menu with the cricket sim installed. My other option is to switch carriers.

Related

US998 V30 on Verizon?

Can anyone report on their experience with using the US998 V30 on Verizon?
Does it work with 3G/CDMA?
I have a Verizon 4G Network Extender at home. Anyone using one of those with the US998 V30?
thanks,
I've been using an LG V30+ (US998U, from Bhphoto) for a few months now, on Verizon. I've had zero issues with reception, and I do believe my phone occasionally goes into 3G mode. I don't have an extender to test against/comment on, though.
FYI, in case it's not obvious, there is no support for Wifi calling on Verizon with this version of the phone/OEM ROM. I'm not sure if anyone will work on that later, but I just want to throw it out there.
I also have a US998 on Verizon and the experience has been very good. No issues whatsoever.
swieder711 said:
Can anyone report on their experience with using the US998 V30 on Verizon?
Does it work with 3G/CDMA?
I have a Verizon 4G Network Extender at home. Anyone using one of those with the US998 V30?
thanks,
Click to expand...
Click to collapse
I'm using the B&H US998 V30+ on Verizon.
I have a 4g extender in my house.
The phone works with it but it reports 3g on the status bar.
It says 4g under Network and levels.
When the extender is off, phone reports 3g at home because I have poor 4g.
At work it reports 4g.
You will only get a cryptic text message and a missed call notification when you get a voicemail.
Other than those things, I haven't noticed any other problems.
dvgb173 said:
I'm using the B&H US998 V30+ on Verizon.
I have a 4g extender in my house.
The phone works with it but it reports 3g on the status bar.
It says 4g under Network and levels.
When the extender is off, phone reports 3g at home because I have poor 4g.
At work it reports 4g.
You will only get a cryptic text message and a missed call notification when you get a voicemail.
Other than those things, I haven't noticed any other problems.
Click to expand...
Click to collapse
Thanks for the overview of your experience with the 4G Network Extender.
What happens when you dial #48 on your phone? Does it say that "You are under a 4G Network?"
swieder711 said:
Thanks for the overview of your experience with the 4G Network Extender.
What happens when you dial #48 on your phone? Does it say that "You are under a 4G Network?"
Click to expand...
Click to collapse
I'll try it when I get home.
EDIT: Yes it does.
You can get rid of the Cryptic text message for voicemails by turning off the Advanced Voice Mail feature on your account (switch it back to Basic Voicemail). I don't know exactly where that's done because my phones are under a company account and I believe the interface is different for people with personal accounts. Either way you can probably call verizon and have them do it for you if you can't find the appropriate interface.
AdmiralKirk said:
You can get rid of the Cryptic text message for voicemails by turning off the Advanced Voice Mail feature on your account (switch it back to Basic Voicemail). I don't know exactly where that's done because my phones are under a company account and I believe the interface is different for people with personal accounts. Either way you can probably call verizon and have them do it for you if you can't find the appropriate interface.
Click to expand...
Click to collapse
I don't have the advanced voicemail.
Sorry, I meant switch from "Visual Voicemail" back to "Basic Voicemail". Advanced Voicemail was something else entirely (a pay for service if memory serves).
Flashing Verizon Oreo onto US998
Flashing Verizon Oreo onto US998
Yes, this below is a U.S. Cellular US998, but to my knowledge the only difference between that and "open market" US998 is the IMEI range of the latter (when bought retail) allows bootloader unlock. Other than that they are identical. That's why my stock firmware for open market US998 works just fine on U.S. Cellular US998.
Guess what else works just fine on US998? Verizon Oreo firmware. WOW.
mikeyinid said:
I got my V30 off a guy on Craigslist. Supposedly US unlocked variant. Turns out it's the US cellular variant which puts me in a spot. I can't get OTA updates like I've seen others say. I was able to upgrade using this method however.
My curiosity got the better of me though so using the dev LGup I was able to flash Verizon Oreo on it using partition dl. Say down the road a particular variant gets root, we could use this to flash that variants FW and root?
Click to expand...
Click to collapse
ChazzMatt said:
I'm posting your comments to another thread, as it's very interesting.
Your Oreo is working good?
Sent via open market LG US998 V30/V30+
Click to expand...
Click to collapse
mikeyinid said:
Yes, it works fine. Didn't even wipe data.
Only issue I see is the same issue I had before. No OTA's. It just stalls checking.
Click to expand...
Click to collapse
mikeyinid said:
So after flashing the VZW fw on my US cellular 998, my voicemail issues are fixed. Verizon visual voicemail works and I don't get that weird text every time I get a voicemail. But, after a lengthy chat with vzw support I am afraid that video calling will not work. I've never even used it so not a deal breaker for me...
Click to expand...
Click to collapse
Chazz,
Did you try the Verizon Oreo on your V30+?
dvgb173 said:
Chazz,
Did you try the Verizon Oreo on your V30+?
Click to expand...
Click to collapse
No. I'm a little hesitant since I don't use Verizon. I don't necessarily want my V30 phone identifying itself as VS996 instead of US998.
Also, to flash KDZ I'll need to re-lock the bootloader. I'm afraid my unlock.bin file won't work again if the model number is different.
For the U.S.Cellular model US998 that wouldn't matter as the bootloader can't be unlocked anyway, via the LG Developer Bootloader Unlock list website.
I'll wait for US998 Oreo.
Sent via open market LG US998 V30/V30+
I have this phone with Verizon. I have to use Google's messages app, because i can't send mms pictures with other messaging apps like textra and chomp. However, i can receive mms pictures just fine. Also, the Pulse messaging app seems to work fine.
Whatever you do don't disable "LG IMS" in LG Package Disabler. It completely broke sending and receiving text messages and making and receiving phone calls on my phone. That was fun figuring out...
Shoey Peachew said:
I have this phone with Verizon. I have to use Google's messages app, because i can't send mms pictures with other messaging apps like textra and chomp. However, i can receive mms pictures just fine. Also, the Pulse messaging app seems to work fine.
Whatever you do don't disable "LG IMS" in LG Package Disabler. It completely broke sending and receiving text messages and making and receiving phone calls on my phone. That was fun figuring out...
Click to expand...
Click to collapse
Textra is my default messaging app on my current phone (Moto X with 7.0). Very strange and disappointing that you can't get it to work on Verizon. Can you send SMS, but not MMS with Textra? Have you tried contacting Textra's tech support?
Can you use VoLTE for simultaneous voice and data over an LTE connection?
Textra mostly works. I can't receive mms, but i can send them just fine. Sms works. I've learned to live with Google's messaging app.
ChazzMatt said:
Flashing Verizon Oreo onto US998
Yes, this below is a U.S. Cellular US998, but to my knowledge the only difference between that and "open market" US998 is the IMEI range of the latter (when bought retail) allows bootloader unlock. Other than that they are identical. That's why my stock firmware for open market US998 works just fine on U.S. Cellular US998.
Guess what else works just fine on US998? Verizon Oreo firmware. WOW.
Click to expand...
Click to collapse
Yesterday I flashed the Verizon VS99610D (Nougat) KDZ onto my B&H US998 V30+ using LGUP and the PartitionDL option. It worked fine and now Voicemail works as expected, just as reported. Model number now shows as VS996.
Unfortunately I lost the ability to connect with LG Bridge, which I was using for backups. The Verizon Software update tool doesn't connect with phone either.
Today I flashed the VS 99620A (Oreo 8.0) using the same method and I have the same results.
If anybody has suggestions for regaining LG Bridge connection, Let me know.

UICC unlocked on other carriers.

So I finally unlocked my LG V30+ on sprint, (LS998)
I'm curious about anyone who has UICC unlocked the phone on a sprint network, then switched over to tmo, cricket, vz, simple mobile, metro or some other company:
-Did everything work ok, data and voice?
-Did you have any issues? if so what where they
-other than popping the sprint sim out and the other sim in, did you have to do anything else to get it to work, ie: new apn?
I ask because doing a Google search and landing on sprint forums it seems that some have switched to tmo and had issues..... Most common ones seem to be either they have data and no voice, or they have voice but no data.
easyrider77 said:
So I finally unlocked my LG V30+ on sprint, (LS998)
I'm curious about anyone who has UICC unlocked the phone on a sprint network, then switched over to tmo, cricket, vz, simple mobile, metro or some other company:
-Did everything work ok, data and voice?
-Did you have any issues? if so what where they
-other than popping the sprint sim out and the other sim in, did you have to do anything else to get it to work, ie: new apn?
I ask because doing a Google search and landing on sprint forums it seems that some have switched to tmo and had issues..... Most common ones seem to be either they have data and no voice, or they have voice but no data.
Click to expand...
Click to collapse
Well I didn't uicc unlock but I did flash us998 kdz on my ls998 and it sim unlocked it fine. I was using it on T-Mobile.
Everything worked as intended, volte and calls over WiFi worked fine. No issues at all. The only thing this phone needs is proper Android 10 support. WiFi on Android 10 for the v30 is a hit and miss. There are fixes available but that was too much of a hassle for me personally. Went back to stock.
easyrider77 said:
So I finally unlocked my LG V30+ on sprint, (LS998)
I'm curious about anyone who has UICC unlocked the phone on a sprint network, then switched over to tmo, cricket, vz, simple mobile, metro or some other company:
-Did everything work ok, data and voice?
-Did you have any issues? if so what where they
-other than popping the sprint sim out and the other sim in, did you have to do anything else to get it to work, ie: new apn?
I ask because doing a Google search and landing on sprint forums it seems that some have switched to tmo and had issues..... Most common ones seem to be either they have data and no voice, or they have voice but no data.
Click to expand...
Click to collapse
That's because the Sprint firmware does not have all the bands necessary for other carriers. It's still a Sprint phone. Whereas if you convert it to US998 it would be more compatible with other carriers. Like stated above, on T-Mobile you get VoLTE, Wi-Fi calling, etc. Or use the "US998" on AT&T. Once converted it takes on the bands/modems of the firmware you are converting to.
I know you've already carrier unlocked your phone, but the easiest, most common way to carrier unlock LS998 is to convert to Open Market US998 or some North American carrier unlocked firmware. Which also gives you the advantage of better LTE bands. See attached screenshots.
No one who is not a Sprint customer leaves LS998 on Sprint firmware. At least people who have access to information on XDA. See Frankenstein instructions.
Like the other said.... make it a US998 phone and you can go wherever you want. I had my converted US998, which I then converted to VS996. This was used on Verizon and now on TotalWireless with no issues. I'm thinking of going back to US998 since I don't have to have VZ stuff on it anymore.
Make the jump and you'll be happy. US998 is a great place to be (except on VZ, where VS996 makes sense).
Yeah, if I end up switching carriers, I'll be kdz flashing the us988.
I left a lengthy thread on going back to sprint via the ls988 and frankenstien way, but I was wondering since you have to be rooted and bl unlocked, the phone won't register correctly back on sprint if the bl is unlocked, so in that case what do you do?
If it's not possible to do, then it's pretty much once you leave sprint it's a done deal, no going back.
Here is the thread:
https://forum.xda-developers.com/lg-v30/how-to/simple-question-us988-to-lg988-t4096609
Read the thread. Believe ChazzMatt's statements, as he is the expert on this phone and process. In the very thread you quoted, he says:
"Lots of Sprint people who have temporarily converted to US998, unlocked bootoader, then flash back to Sprint firmware -- keeping TWRP and root. One of our main DEVs is a Sprint customer. So your worries are totally baseless.
Why do you think we have TWRP flashable zips Sprint firmware to flash back to, if the phone couldn't be used?"
Bottom line, you'll be fine. The trick is you need to be already activated on Sprint. Verizon does the same BS... they won't let you activate on a non-VZ phone just because they're idiots. There is no reason not to do this, as you certainly can work with these phones. As I (and many others) have proven time and time again. I'm guessing Sprint may do the same thing...
easyrider77 said:
So I finally unlocked my LG V30+ on sprint, (LS998)
I'm curious about anyone who has UICC unlocked the phone on a sprint network, then switched over to tmo, cricket, vz, simple mobile, metro or some other company:
-Did everything work ok, data and voice?
-Did you have any issues? if so what where they
-other than popping the sprint sim out and the other sim in, did you have to do anything else to get it to work, ie: new apn?
I ask because doing a Google search and landing on sprint forums it seems that some have switched to tmo and had issues..... Most common ones seem to be either they have data and no voice, or they have voice but no data.
Click to expand...
Click to collapse
I just purchased a Lg V30 H932 64GB (T-Mobile + GSM Unlocked) off ebay a few days ago. I put my At&T sim in it and set my APN settings to AT&T's (NXTGENPHONE) which is what I had on my old phone (LG K20 Metro unlocked).
I can call, text, and get online but the mobile hotspot isn't working. It allows other devices to connect but says " NO INTERNET".
Its very frustrating because I rely on my hotspot to use my pc and other devices. Any help would be greatly appreciated.
ncromer31 said:
I just purchased a Lg V30 H932 64GB (T-Mobile + GSM Unlocked) off ebay a few days ago. I put my At&T sim in it and set my APN settings to AT&T's (NXTGENPHONE) which is what I had on my old phone (LG K20 Metro unlocked).
I can call, text, and get online but the mobile hotspot isn't working. It allows other devices to connect but says " NO INTERNET".
Its very frustrating because I rely on my hotspot to use my pc and other devices. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Probably should have bought Open Market US998. Easily root and use hotspot.
Maybe if you root the T-Mobile H932 you can get hotspot working, but T-Mobile H932 is more difficult to root than the other variants. You also can NOT cross flash T-Mobile H932 to any other variant.
See post #1:
ROOT YOUR V30!
https://forum.xda-developers.com/lg-v30/how-to/root-v30-t3927154
ncromer31 said:
I just purchased a Lg V30 H932 64GB (T-Mobile + GSM Unlocked) off ebay a few days ago. I put my At&T sim in it and set my APN settings to AT&T's (NXTGENPHONE) which is what I had on my old phone (LG K20 Metro unlocked).
I can call, text, and get online but the mobile hotspot isn't working. It allows other devices to connect but says " NO INTERNET".
Its very frustrating because I rely on my hotspot to use my pc and other devices. Any help would be greatly appreciated.
Click to expand...
Click to collapse
It is true that H932 is the most locked down V30 model, and not one to recommend, except for users who need LTE band 71 (which only this model supports).
BUT I had no problems using HotSpot with my H932 on Red Pocket GSMA (AT&T MVNO). I just set it up under Tethering and it worked no problem. Of course the APN has to be correct for it, and I cannot tell you what that should be for native AT&T.
ChazzMatt said:
Probably should have bought Open Market US998. Easily root and use hotspot.
Maybe if you root the T-Mobile H932 you can get hotspot working, but T-Mobile H932 is more difficult to root than the other variants. You also can NOT cross flash T-Mobile H932 to any other variant.
See post #1:
ROOT YOUR V30!
https://forum.xda-developers.com/lg-v30/how-to/root-v30-t3927154
Click to expand...
Click to collapse
I wish I had known more about this before I bought it. I just assumed everything would work right since it was unlocked and compatible with AT&T. I never had any issues with my Metro phone that was unlocked.
I've never rooted or flashed a LG phone before and am kinda worried about messing it up. I've used Odin with my S5 and flashed it but never rooted it. I thought setting the apn settings to what I had them as on my previous phone would work but it doesn't. I searched the network operators and it only showed "RAT : ATT " and " RAT : WCDMA".
network mode only listed these options:
Automatic LTE/3G/2G
Automatic 3G/2G
LTE/3G
2G Only
The network mode I was using (on previous phone) was GSM/WCDMA/LTE auto but I dont have that option now..
Thanks for the help!
ChazzMatt said:
Probably should have bought Open Market US998. Easily root and use hotspot.
Maybe if you root the T-Mobile H932 you can get hotspot working, but T-Mobile H932 is more difficult to root than the other variants. You also can NOT cross flash T-Mobile H932 to any other variant.
See post #1:
ROOT YOUR V30!
https://forum.xda-developers.com/lg-v30/how-to/root-v30-t3927154
Click to expand...
Click to collapse
TheDannemand said:
It is true that H932 is the most locked down V30 model, and not one to recommend, except for users who need LTE band 71 (which only this model supports).
BUT I had no problems using HotSpot with my H932 on Red Pocket GSMA (AT&T MVNO). I just set it up under Tethering and it worked no problem. Of course the APN has to be correct for it, and I cannot tell you what that should be for native AT&T.
Click to expand...
Click to collapse
I actually fixed it and it was quite simple..I went to my apn settings. I used the NXTGENPHONE settings except I added "dun", to the end of my apn type!
ncromer31 said:
I actually fixed it and it was quite simple..I went to my apn settings. I used the NXTGENPHONE settings except I added "dun", to the end of my apn type!
Click to expand...
Click to collapse
Good, makes sense. As much as I agree about the limitations of H932, inability to tether isn't one of them!
ncromer31 said:
I actually fixed it and it was quite simple..I went to my apn settings. I used the NXTGENPHONE settings except I added "dun", to the end of my apn type!
Click to expand...
Click to collapse
Glad you got it working. The reason I suggested root is because there are some carriers who won't let you have hotspot without paying extra for the privilege of using your own phone to its full extent. Rooting solves that.
ChazzMatt said:
Glad you got it working. The reason I suggested root is because there are some carriers who won't let you have hotspot without paying extra for the privilege of using your own phone to its full extent. Rooting solves that.
Click to expand...
Click to collapse
Fair enough: Adding "dun" to the APN only works when tethering is permitted by the carrier -- and it allows the carrier to meter the tethered data, and throttle it if they want. Personally I haven't had a traditional carrier in years, and the MVNO I use isn't the shenanigans type.
But do we really need root to work around that? I recall an old all trick from my Nexus 5 days where we would set tether_dun_required=0 in the global settings database using ADB, with no root required. I haven't had to do this on V30, again because I have avoided those carriers. But I would guess it still works.
I am asking, since surely you would know
TheDannemand said:
Fair enough: Adding "dun" to the APN only works when tethering is permitted by the carrier -- and it allows the carrier to meter the tethered data, and throttle it if they want. Personally I haven't had a traditional carrier in years, and the MVNO I use isn't the shenanigans type.
But do we really need root to work around that? I recall an old all trick from my Nexus 5 days where we would set tether_dun_required=0 in the global settings database using ADB, with no root required. I haven't had to do this on V30, again because I have avoided those carriers. But I would guess it still works.
I am asking, since surely you would know
Click to expand...
Click to collapse
Verizon is a carrier who won't allow you to "tether" without paying a separate hotspot fee per month. For those people still on legacy (true) unlimited data, many use root to get around that.
https://www.verizonwireless.com/support/mobile-hotspot-faqs/
Note: The $75 Prepaid Unlimited* plan also includes Mobile Hotspot with speeds up to 600 kbps. Mobile Hotspot isn't available on the $70 Prepaid Unlimited and $80 Prepaid Unlimited* plans.
If you don't have one of the plans listed above, you may be able to add Mobile Hotspot to your line. You'll be charged monthly to have the Mobile Hotspot feature, in addition to data usage charges.
Click to expand...
Click to collapse
ChazzMatt said:
Verizon is a carrier who won't allow you to "tether" without paying a separate hotspot fee per month. For those people still on legacy (true) unlimited data, many use root to get around that.
https://www.verizonwireless.com/support/mobile-hotspot-faqs/
Click to expand...
Click to collapse
Absolutely. We know that the traditional carriers like to limit or throttle tethering. I think T-Mobile does too. The dun feature exists to help them control that, by classifying tethered data separately from other data.
What I meant was do we really need root to work around that on V30? Doesn't the old trick I mentioned (or maybe a newer one) work on V30?
Edit: I may actually test that to find out. Dun in the APN shouldn't be needed in 2020.
TheDannemand said:
Absolutely. We know that the traditional carriers like to limit or throttle tethering. I think T-Mobile does too. The dun feature exists to help them control that, by classifying tethered data separately from other data.
What I meant was do we really need root to work around that on V30? Doesn't the old trick I mentioned (or maybe a newer one) work on V30?
Edit: I may actually test that to find out. Dun in the APN shouldn't be needed in 2020.
Click to expand...
Click to collapse
I wasn't aware of any trick other than rooting because I've always had rooted phones...
In all my years of Androids I've really only needed hotspot one time -- when I was in Brazil. But I was rooted and it worked great.
Yes, I've tested a couple of other times, but again I'm rooted.

Good data signal strength to poor call strength?

My question/problem. What/why do I have a good 4 bars (of 5 bars) of data signal normally, but, when I decide to dial and make a telephone call, the signal strength goes to barely one bar as soon as I hit the dial button on the phone? I have not moved myself or the phone's location. The call may dial, but goes in and out and, more often than not, drops the call. At the same time, if I receive a call from someone, it is normally a much better signal, and does not drop or go in and out.
I am on Verizon phone (vs996) Frankenstein to us998 30b (pie). I have recently tried android 10 roms (Havoc, POSP). I don't know if that has anything to do with it or not? Very frustrating when trying to call someone.
Any thoughts or explanations or, hopefully, fixes?
Thx
gimpy1 said:
My question/problem. What/why do I have a good 4 bars (of 5 bars) of data signal normally, but, when I decide to dial and make a telephone call, the signal strength goes to barely one bar as soon as I hit the dial button on the phone? I have not moved myself or the phone's location. The call may dial, but goes in and out and, more often than not, drops the call. At the same time, if I receive a call from someone, it is normally a much better signal, and does not drop or go in and out.
I am on Verizon phone (vs996) Frankenstein to us998 30b (pie). I have recently tried android 10 roms (Havoc, POSP). I don't know if that has anything to do with it or not? Very frustrating when trying to call someone.
Any thoughts or explanations or, hopefully, fixes?
Thx
Click to expand...
Click to collapse
If you are using Verizon on US998 firmware, then you don't have access to VoLTE (which is phone calls over LTE, Voice over LTE). LTE started out as a data-only service but for actual phone calls, carriers were still using 3G HSPA or CDMA (Verizon, Sprint). When making a phone call, phones temporarily bump down to 3G, and then jump back to LTE after the phone call is over.
With the VoLTE protocol, that finally allowed phone calls with LTE. It added VOICE capability to LTE.
However, different carriers treat VoLTE differently. T-mobile allows VoLTE and Wi-Fi calling for US998 phones, while AT&T and Verizon are more stingy. They reserve VoLTE mostly for their branded phones running their carrier firmware.
I'm an AT&T customer and I've never had VoLTE because I've never used a branded AT&T phone. For me, on AT&T, when I make a phone call I am bumped down temporarily to AT&T HSPA. Then, after the phone call, it jumps back to LTE.
If I were to flash the AT&T TWRP flashable zip, possibly I could enable that. But it's not just firmware, it's also a setting on the carrier side that has to be enabled.
Bottom line, what's happening is you are seeing you STRONG LTE signal. But when you make a phone call, you are being temporarily bumped down to Verizon CDMA. However, Verizon is in the process of dismantling all their CDMA towers. That's why your CDMA signal is so weak. Verizon plans to shutdown CDMA entirely by end of 2020. After that, you will need VoLTE to make phone calls on Verizon.
Since you have an actual VS996, you can flash the VS996 TWRP-flashable zip. Once on that firmware, see if VoLTE is enabled on your account (carrier side setting) and see if when you make phone calls you stay on LTE and are not bumped down to CDMA?
Thx, Chazz. So, it's a Verizon thing? Not necessarily something I caused by going back and forth trying out the different Android 10 roms. Good to know. I will try the 996 rom later today, since I don't need the Hotspot for a couple of days. As always, you've been very helpful, thx. :good:
gimpy1 said:
Thx, Chazz. So, it's a Verizon thing? Not necessarily something I caused by going back and forth trying out the different Android 10 roms. Good to know. I will try the 996 rom later today, since I don't need the Hotspot for a couple of days. As always, you've been very helpful, thx. :good:
Click to expand...
Click to collapse
Yes, especially if you see strong LTE signal before making the phone call. Control freak Verizon (mostly) only allows VoLTE on Verizon firmware with Verizon branded phones. There may be exceptions (maybe Pixel phones?) and I know the ZTE Axon 7 (not a branded Verizon phone) somehow got VoLTE not only on ZTE stock firmware but also on LOS ROM -- but I believe ZTE paid Verizon to allow that. It's the exception that proves the rule.
Here's a a more in depth article about Verizon CDMA being shut down end of this year.
https://grantcountyreview.com/content/verizon-wireless-postpones-its-shutdown-3g-cdma networks
when Verizon closes its 2G and 3G networks at the end of 2020, 3G phones will become obsolete and non-VoLTE LTE phones will not be able to make or receive calls.
Click to expand...
Click to collapse
You DO have a Verizon VoLTE capable phone -- a Verizon VS996 -- but for V30 only on Verizon firmware. If you were using T-mobile with US998 firmware, you would have no problems with VoLTE or Wi-Fi calling. T-mobile is more open than Verizon about such perks.
I don't get VoLTE with AT&T on US998 firmware, but AT&T has no plans to end 3G HSPA anytime soon.
Chazz, I thought I would give a quick update. Late Last night/early this morning, I switched to vs99630c. I have made two phone calls, one to Florida, one to Washington state. Both connected and sounded so much better than when with the us99830b Rom. Even though both dialers had a little HD in the upper left hand corner. This Rom kept the same 3 or 4 bar designation for the signal strength. Much happier with it. Even though I don't have a hotspot (may have to pay the $10(?)or so to set it up, if I decide to stay on here.
Also, I have just seen a 99630c debloated Rom someone has made, that I might try in the next day or so.
I so wanted to try the android 10 Roms, but I just had too many small issues (reboots, no hot spot, system ui crashes, etc.).
Thnx, again for your help and guidance.
gimpy1 said:
Chazz, I thought I would give a quick update. Late Last night/early this morning, I switched to vs99630c. I have made two phone calls, one to Florida, one to Washington state. Both connected and sounded so much better than when with the us99830b Rom. Even though both dialers had a little HD in the upper left hand corner. This Rom kept the same 3 or 4 bar designation for the signal strength.
Much happier with it. Even though I don't have a hotspot (may have to pay the $10(?)or so to set it up, if I decide to stay on here.
Also, I have just seen a 99630c debloated Rom someone has made, that I might try in the next day or so.
I so wanted to try the android 10 Roms, but I just had too many small issues (reboots, no hot spot, system ui crashes, etc.).
Thnx, again for your help and guidance.
Click to expand...
Click to collapse
Then you are now probably using Verizon VoLTE, which is using LTE signal -- not the increasingly degraded CDMA signal Verizon will completely shut off December 31, 2020.
Verizon is probably already deprecating those towers -- leaving just enough, like when you're on the highways.
ChazzMatt said:
Then you are now probably using Verizon VoLTE, which is using LTE signal not the increasingly degraded CDMA signal Verizon will completely shut off December 31, 2020.
Verizon is probably already deprecating those towers -- leaving just enough, like when you're on the highways.
Click to expand...
Click to collapse
I really want volte and vowifi for my unlocked us998. The only way to have that is to flash the vs rom, which is 30c? I'm on US99820h, what do I lose by going to the vs rom? Is there a vs 20h variant?
ldeveraux said:
I really want volte and vowifi for my unlocked us998. The only way to have that is to flash the vs rom, which is 30c? I'm on US99820h, what do I lose by going to the vs rom? Is there a vs 20h variant?
Click to expand...
Click to collapse
Yes, we have Oreo VS996 KDZ. It's actually "20k", because it took Verizon two attempts to fully release LG V30 Oreo. And they released a couple extra updates for Verizon related bugs. So, although it's equivalent to US998 20h, it's a higher letter.
https://forum.xda-developers.com/lg-v30/development/vs996-lg-v30-verizon-vs996-t3865398
You need to have VoLTE enabled in your Verizon account, besides flashing this firmware. It helps to have it already enabled from a Verizon branded phone. But sometimes a helpful store rep willing to bend the rules can do it for you.
ChazzMatt said:
Yes, we have Oreo VS996 KDZ. It's actually "20k", because it took Verizon two attempts to fully release LG V30 Oreo. And they released a couple extra updates for Verizon related bugs.
https://forum.xda-developers.com/lg-v30/development/vs996-lg-v30-verizon-vs996-t3865398
You need to have VoLTE enabled in your Verizon account, besides flashing this firmware. It helps to have it already enabled from a Verizon branded phone. But sometimes a helpful store rep willing to bend the rules can do it for you.
Click to expand...
Click to collapse
I thought the Pie variants were not great, lots of broken features? Or was that just the US998 versions? What were the tradeoffs to staying on Oreo?
ldeveraux said:
I thought the Pie variants were not great, lots of broken features? Or was that just the US998 versions? What were the tradeoffs to staying on Oreo?
Click to expand...
Click to collapse
You asked for Verizon Oreo equivalent to US998 20h and that's what I gave you.
I'm not recommending Pie for US998.
Verizon Pie may be a lot better. I don't know. Someone using Verizon Pie will have to answer.
ChazzMatt said:
You asked for Verizon Oreo equivalent to US998 20h and that's what I gave you.
I'm not recommending Pie for US998.
Verizon Pie may be a lot better. I don't know. Someone using Verizon Pie will have to answer.
Click to expand...
Click to collapse
I misread, somehow thought the ROM you linked was Pie. My bad. I know dirty flash is never recommended, but could I get away with it here? What do I lose by going with the VS ROM over the US998? Apparently the only things I have to gain are VOLTE and possibly VVM?
ldeveraux said:
I misread, somehow thought the ROM you linked was Pie. My bad. I know dirty flash is never recommended, but could I get away with it here? What do I lose by going with the VS ROM over the US998? Apparently the only things I have to gain are VOLTE and possibly VVM?
Click to expand...
Click to collapse
Do you have VoLTE already enabled in your Verizon account?
You'll lose the no bloatware experience, but you can fix that with Titanium Backup.
As for dirty flashing, you can try... If it doesn't work, then you have to factory reset and clean install. Don't forget to reflash Magisk.
ChazzMatt said:
Do you have VoLTE already enabled in your Verizon account?
You'll lose the no bloatware experience, but you can fix that with Titanium Backup.
As for dirty flashing, you can try... If it doesn't work, then you have to factory reset and clean install. Don't forget to reflash Magisk.
Click to expand...
Click to collapse
I logged into my VZW account and after 8745 menus, finally found the HD Voice section. It says it's "Active", so I should be good for the VS ROM yes?
ldeveraux said:
I logged into my VZW account and after 8745 menus, finally found the HD Voice section. It says it's "Active", so I should be good for the VS ROM yes?
Click to expand...
Click to collapse
Seems like, yes.
I had to do a few steps to manually activate HD/VOLTE on my VS996 phone when I was on VZ. I documented the steps somewhere here (using ShortcutMasterLite). I know at least one other member here used the same steps on his phone. I'm thinking you'll be fine once you're on VS996.
I have not switched to Pie... still running Oreo. I have heard too many issues with Pie, so I have no desire to bother. I can't imagine VZ's Pie release is any better than Pie US998. VZ is too lazy to do anything else right, so why would they bother fixing what's wrong on US998.
Just want to quickly update this thread. I dirty flashed the VS99620K.zip in TWRP, then immediately flashed the latest Magisk zip. Everything updated perfectly, installed about 10 VZ apps, and I now have VOWIFI (and can send/receive texts!), though haven't been able to check VOLTE as I'm currently in a dead zone.
I'd already had HD calling active on my account, but can't select the option to also enable Video Calling. It says I need to contact support. I chatted multiple times with VZ support who claim it's active, though every time I try to enable it, it gives me the same error. What is this option, and do I need it? I'm pretty sure I was able to use Duo, Skype, Zoom, etc before the ROM update, am I spinning my wheels here?
Also, independent of this upgrade, my motion GIFs in any text app don't move. I thought it might have something to do with the non-VZ specific kernel, but after flashing, still just shows a static picture.
ldeveraux said:
I'd already had HD calling active on my account, but can't select the option to also enable Video Calling. It says I need to contact support. I chatted multiple times with VZ support who claim it's active, though every time I try to enable it, it gives me the same error. What is this option, and do I need it? I'm pretty sure I was able to use Duo, Skype, Zoom, etc before the ROM update, am I spinning my wheels here?
Click to expand...
Click to collapse
Are you the account holder? Some people can't get to it as they are just user.
https://community.verizonwireless.c...video-calling-feature-is-disabled/td-p/853001
I'm not sure what Verizon video calling is. I'm guessing some Verizon-only video chat -- like Apple's FaceTime is only for iOS? If you are already using Duo, Skype, Zoom, it would seem you don't need it. But you do make sure you have voice over LTE (VoLTE, called "HD calling" Verzion) --before end of this year.
ChazzMatt said:
Are you the account holder? Some people can't get to it as they are just user.
https://community.verizonwireless.c...video-calling-feature-is-disabled/td-p/853001
I'm not sure what video calling is. I'm guessing some Verizon-only video chat -- like Apple's FaceTime is only for iOS? If you are already using Duo, Skype, Zoom, you don't need it. But you do need to get voice over LTE.
Click to expand...
Click to collapse
I am the only user on this account, so definitely the account holder. After more wasted chats with VZ, they said that since my phone is not VZ branded, it's not eligible for Video Calling, which apparently is exactly as you described; Facetime for non-iphone Verizon users. I don't need that, as you said all my other platforms work fine.
How do I determine if VOLTE works? Like I said, I'm in a dead zone now, but going out to a good cell region in a few hours and can check then somehow. I did confirm that I can make calls and text over WiFi, so that's half the battle. How to check VOLTE?
ldeveraux said:
How do I determine if VOLTE works? Like I said, I'm in a dead zone now, but going out to a good cell region in a few hours and can check then somehow. I did confirm that I can make calls and text over WiFi, so that's half the battle. How to check VOLTE?
Click to expand...
Click to collapse
I think if you have Vo-WiFi that means your VoLTE is also activated. They seem to be packaged together.
If you make a call in a good signal area, see if the "4GLTE" icon stays on when you make the call. It may even change to VoLTE icon? or HD calling icon? A Verizon user can probably tell you better. But the key is to see if there are any status bar icon changes and what they are. Also see if there is any information in the dialer GUI during the call, where you click on the dialer timer.
Yeah, don't talk to VZ. They're too stupid to help and downright liars. Your phone will work fine on their network even if it's not VZ branded (I've used US998 and H931 phones on VZ without issue).
On my phone, I did have to do some setting changes in SML (ShortcutMasterLite) to get VOLTE working. I don't think most people have to do that, but I did... and I agree, I think that got VOWIFI working as well. I'm guessing you have both, too... just need to try it. If not, you can force-activate it as I documented earlier (via SML).

Help, how do I enable VOLTE?

I am on red pocket service. I just received an email stating I do not have VOLTE enabled and may lose service. Supposedly, I should be able to enable VOLTE. I reached out to customer service in the past and they stated it is active on their side. Their website says I should be able to see it under settings -> mobile network; but I see not options for VOLTE. I have had **** service the past few months, with texts not being sent despite it showing bars or texts incoming taking a while; I wonder if this is related. Can anyone please help me?
I am on Android 8.0.0
Kernel 4.4.78
Version: US99820h
If it helps, VoLTE plus app says VOLTE is enabled. Do I need to be concerned? Is there any reason my service seems to run like crap? It's red pocket GSM-T. Had many people tell me calling me goes straight to voicemail, I get texts late, for confirmation texts I often have to restart the phone to get the texts to come through... Any fix to this? Should I switch to a different image and go onto a different set of towers/service?
Many V30 phones require the carrier's ROM to operate VOLTE. For example, when I was on Verizon, I had to have VS996 to get VOLTE to work. I also used it on Total Wireless (which is a VZ MVNO) for the same reason.
I'm guessing your GSM-T means you're on TMo, so you may need a TMo ROM to get VOLTE to work. US998 is a world-phone ROM, so it's not carrier specific, which may be why it doesn't work.
As for the general operation, you should be fine on US998 for all other functions... so if you're having issues then there may be something else going on.
You might also just need some updates - 20h is nougat level, which is ancient. You may need to move to Oreo... which worked great for me on my V30 in the past.
schwinn8 said:
Many V30 phones require the carrier's ROM to operate VOLTE. For example, when I was on Verizon, I had to have VS996 to get VOLTE to work. I also used it on Total Wireless (which is a VZ MVNO) for the same reason.
I'm guessing your GSM-T means you're on TMo, so you may need a TMo ROM to get VOLTE to work. US998 is a world-phone ROM, so it's not carrier specific, which may be why it doesn't work.
As for the general operation, you should be fine on US998 for all other functions... so if you're having issues then there may be something else going on.
You might also just need some updates - 20h is nougat level, which is ancient. You may need to move to Oreo... which worked great for me on my V30 in the past.
Click to expand...
Click to collapse
So, do you think I would need switch to a newer ROM, specifically for tmobile? I have been on us998 since buying it, always had some issues with texts coming in late and connectivity (although not as bad as when I had a S5 on Ting's t-mobile network). I had called and been told VOLTE is active with red pocket twice in the past, but despite always being on wifi I've still had people tell me I do not always come in clear when talking on the phone.
Can you point me to a newer ROM you used? I can try updating and messing with the phone later this month.
You can't use my ROM (VS996), as it was for Verizon. I doubt that will work for you. You need to find the proper on for your carrier (TMobile most likely) and see if that fixes the issues. All my ROMs I sourced from this website/forum, so you just need to search the V30 section here.
Note, when switching ROMs, you will need to wipe it so be prepared with backups for your data.
SuperUser1010 said:
So, do you think I would need switch to a newer ROM, specifically for tmobile? I have been on us998 since buying it, always had some issues with texts coming in late and connectivity (although not as bad as when I had a S5 on Ting's t-mobile network). I had called and been told VOLTE is active with red pocket twice in the past, but despite always being on wifi I've still had people tell me I do not always come in clear when talking on the phone.
Can you point me to a newer ROM you used? I can try updating and messing with the phone later this month.
Click to expand...
Click to collapse
Just be careful NOT to flash H932 ROM on your device, it will brick your phone.
You could try updating to us998 Pie ROM and see if it helps.
tech_infinity said:
Just be careful NOT to flash H932 ROM on your device, it will brick your phone.
You could try updating to us998 Pie ROM and see if it helps.
Click to expand...
Click to collapse
Do you have a us998 pie rom you recommend for me to try?
tech_infinity said:
Just be careful NOT to flash H932 ROM on your device, it will brick your phone.
You could try updating to us998 Pie ROM and see if it helps.
Click to expand...
Click to collapse
I saw chazzmatt mention in another thread that when t mobile and sprint merged, VoLTE/VoWiFi calling on US998 firmware phones may have been lost. He suggested that changing to verizon version is a way to fix this. Is this something I may have to do? And is there a guide on how to do it? I only see switching to us998.
And this would this be the rom to flash to for android 9?
[US998][STOCK][PIE]LG V30 US998 US99830b_00_0902.KDZ
RECOVERY TIPS if you get stuck on logo while updating to this wonky US998 Pie. < Please stop asking in Telegram thread or creating new XDA threads when it's right here. We will just direct you back here. OK? ____________ * Do NOT update to Pie...
forum.xda-developers.com
@ChazzMatt is the resident expert, so you can certainly take his advice. I saw that post as well.
Converting to VS996 just means you will use LGUP to flash that ROM over your current one. The end of the WTF post/thread talks about this process as well (be sure to read that post on a computer, as phones often cut-off the bottom).
Note that this will erase your data, so backup/etc as necessary before doing that. My recommendation is to use the last Oreo version of the ROM, as Pie on VS996 had issues last time I had heard... that's the last ROM I used before switching to my other phone.
SuperUser1010 said:
I saw chazzmatt mention in another thread that when t mobile and sprint merged, VoLTE/VoWiFi calling on US998 firmware phones may have been lost. He suggested that changing to verizon version is a way to fix this. Is this something I may have to do? And is there a guide on how to do it? I only see switching to us998.
And this would this be the rom to flash to for android 9?
[US998][STOCK][PIE]LG V30 US998 US99830b_00_0902.KDZ
RECOVERY TIPS if you get stuck on logo while updating to this wonky US998 Pie. < Please stop asking in Telegram thread or creating new XDA threads when it's right here. We will just direct you back here. OK? ____________ * Do NOT update to Pie...
forum.xda-developers.com
Click to expand...
Click to collapse
And in doing so, they still need an already-activated Verizon SIM card or Verizon MVNO SIM card. Verizon won't activate a SIM card with a phone that doesn't have native Verizon IMEI. But you can stick in an already activated SIM card into a v30 with VS996 firmware and it's fine. So whoever does this needs to also have an old Verizon phone for that purpose. Buy some cracked screen Verizon phone off eBay, activate Verizon or Verizon MVNO SIM card, THEN put that SIM card into Frankenstein'ed phone flashed with VS9996 (Verizon) firmware.
ChazzMatt said:
And in doing so, they still need an already-activated Verizon SIM card or Verizon MVNO SIM card. Verizon won't activate a SIM card with a phone that doesn't have native Verizon IMEI. But you can stick in an already activated SIM card into a v30 with VS996 firmware and it's fine. So whoever does this needs to also have an old Verizon phone for that purpose. Buy some cracked screen Verizon phone off eBay, activate Verizon or Verizon MVNO SIM card, THEN put that SIM card into Frankenstein'ed phone flashed with VS9996 (Verizon) firmware.
Click to expand...
Click to collapse
Are phone numbers attached to the sim? So I would have to: obtain verizon sim card, transfer my phone # while activating a plan on it using another phone, then place it into my current phone after flashing it into VS9996 and upgrading it to 9.0?
Yes, the phone number is attached to the SIM card.
Yes, your steps are correct - activate SIM on some other phone, then put it into the VS996.
schwinn8 said:
Yes, the phone number is attached to the SIM card.
Yes, your steps are correct - activate SIM on some other phone, then put it into the VS996.
Click to expand...
Click to collapse
Hmmm, perhaps before I spend money to switch to verizon I should try upgrading from US99820h to US99830b using that thread I posted above? Maybe that will fix things for me. I thought I had fixed something when I updated my redpocket APN point, but I still get random loss of service where I live and work at (despite constant wifi). According to redpocket customer service, being locked into 240 MNC sim card does not change anything compared to 280 MNC.
Perusing the us99830b thread, I saw if I have TWRP installed then I must use johnfawk's image to flash. I cannot "upgrade" and keep all my data using the firmware off LG's website with LGUP. Am I understanding that part correctly? And the TWRP image for me to download is this link? Mirror Link
First, my recommendation is to stay at Oreo (20-series) ROMs. Last I recall, the V30 Pie rom had issues that were never fixed.
Secondly, yes, I don't believe you can upgrade the ROM... you will need to flash the full ROM which would erase things. That being said, since you're already converting between ROMs you will need to wipe the phone anyway, so do all the updates/upgrade BEFORE you install anything else on your phone. And, of course, backup everything you need before doing that...
schwinn8 said:
First, my recommendation is to stay at Oreo (20-series) ROMs. Last I recall, the V30 Pie rom had issues that were never fixed.
Secondly, yes, I don't believe you can upgrade the ROM... you will need to flash the full ROM which would erase things. That being said, since you're already converting between ROMs you will need to wipe the phone anyway, so do all the updates/upgrade BEFORE you install anything else on your phone. And, of course, backup everything you need before doing that...
Click to expand...
Click to collapse
You mentioned before that 20h is nougat level, but my android version says 8.0.0, isn't that oreo already?
Looking at this site: https://lg-firmwares.com/lg-us998-firmwares/
I am already at the latest Oreo software. So, several questions:
1. I could back up all my stuff and risk missing something, but I can also just create a current TWRP image and go back to where I am presently in terms of all my stuff?
2. Should I be trying a https://lg-firmwares.com/lg-vs996-firmwares/ VS99620k version? When I reboot my phone it says it is a LG V30+ThinQ and I vaguely remember the box it came with said LS998 crossed off, with it booting as a US998 phone.
3. I have an old CDMA Galaxy S3 (best phone I've had). Assuming I am able to boot it up, can I buy a verizon MVNO sim card (let's say off of TING), switch my phone # to that and pop it in the S3? Or can I bum someone else' verizon phone and do this, then give the phone back instantly?
4. If a friend has an old verizon sim card, can I use that to utilize either red pocket or ting services?
5. Then, flash this US99820h to VS99620k, swap the sim card out of the S3 into the newly flashed V30?
6. Assuming I do all this and I still see no menu for VOLTE, assuming I still have the same issues of service dropping constantly, any suggestions for moving to a new phone, or what to use to find a new phone? Many new phones seem to have lots of stuff I do not care for (fancy cameras...) and no 3.5mm jack; but I really crave a phone that is functional.
Sorry for lots of questions. But each day this phone is pissing me off more and more and reminding me to do something about it - been busy and have stuff I do not want to risk losing.
I didn't say 20-series was nougat... I said it was Oreo?
1) TWRP will backup everything, so you could use this as a way to "keep safe" what you have now, and maybe you can break into the ZIP and extract things here and there as needed, but I don't think you can use this as a way to restore just your programs/data... it's a whole-image that you need to restore, which includes the OS and such. But if you're already on Oreo, I don't think you need to do any of that?
2) Yes, you can apply VS99620k. I believe that's what I had on my V30 before I left it. I wouldn't pay much attention to the splash screens on bootup... they change between versions but don't really mean/do anything from what I could see. My phone started as US998 (without the "ThinQ" branding) and I believe it showed the ThinQ branding when I was on VS996.
3) Yes, you'll need an activated SIM on VZ to transfer. Yes this is one way to do it. I did something similar with my Droid Turbo. VZ won't activate anything unless the IMEI matches THEIR phone, so this is one way to get that to happen. The trick, today, is that VZ may not activate the old phone because it's not VOLTE capable, so they'll say it's not supported, so that's a risk you should be aware of. For that matter, a newer SIM also may not work on the older phone... I don't know if that's a thing or not.
4) I don't know if MVNOs will let you use VZ SIM cards. Technically, they should be able to, but my guess is they will require their "own" SIM. You'd have to ask the MVNO.
I moved to the Galaxy S10+, which is a similar size phone, has a headphone jack, and is older so it's lower cost (I think I paid $300 about a year or two ago). A few other V30 faithfuls have followed this path as well. I think ChazzMatt went to a Note because that's what ATT gave him to help him transition to a VOLTE-capable phone. I believe he's still using his V30 though.
Newer Galaxy phones lost the headphone jack. I would recommend getting yourself ready for this eventuality... it may mean just getting a dongle, which isn't convenient, or getting bluetooth adapters... but my point is that it's going away whether you like it or not, so start preparing now.
EDIT: I forgot to mention, the S10 is not rootable (at least with Snapdragon). Exynos can be rooted, but I don't know how usable those are in the USA. That's another thing you may need to get used to - not being able to root/ROM. IMO, it's not necessary anymore, and I have given up on it on my phones... and I haven't missed it AT ALL. But I know some have gotten into heated arguments with me over that... one I recall was particularly nonsensical, but whatever. If I could root, I would do that... but I don't see it as a requirement anymore.
SuperUser1010 said:
Hmmm, perhaps before I spend money to switch to verizon I should try upgrading from US99820h to US99830b using that thread I posted above? Maybe that will fix things for me. I thought I had fixed something when I updated my redpocket APN point, but I still get random loss of service where I live and work at (despite constant wifi). According to redpocket customer service, being locked into 240 MNC sim card does not change anything compared to 280 MNC.
Perusing the us99830b thread, I saw if I have TWRP installed then I must use johnfawk's image to flash. I cannot "upgrade" and keep all my data using the firmware off LG's website with LGUP. Am I understanding that part correctly? And the TWRP image for me to download is this link? Mirror Link
Click to expand...
Click to collapse
As @schwinn8 recommends staying on Oreo, I also concur.
1) If you have TWRP, just flash the Verizon last Oreo by John Fawkes. See link below.
LG V30 Verizon VS996-20k ROM
Working downlink mirror: VS996 20K Verizon TWRP-flashable ZIP
2) If you don't have TWRP installed -- for people who are not bootloader unlocked -- then you would flash full stock ROM VS996 20K "KDZ" file from US998. See top post in this thread. (For those who are still bootloader locked, the stock Verizon ROMs and US998 ROMs are the only ones for North America variants which are safely fully cross flashable without first having to go through the "Frankentein" conversion "Nougat" stage.)
As for spending money on Verizon to get VOLTE, there are several Verizon MVNOs that are less expensive than Verizon proper and will still do the trick. Both Visible and Total Wireless are even owned by Verizon, like Cricket is owned by AT&T.
RedPocket also offers Verizon-network SIM cards. They are also a Verizon MVNO. Which carrier service are you using with your RedPocket? They offer choice of AT&T (most common), T-Mobile and Verizon. I searched your posts in this thread and you don't say which you have -- so I assume the AT&T-linked SIM card? If you flash the last Oreo TWRP-flashable zip for Verizon, and you want to keep RedPocket, just have them ship you the Verizon-linked SIM card. You should then have VoLTE.
NOTE: You would still need to use an old Verizon phone to activate that SIM card, but then you could put it into your "VS996". I'm only suggesting a way to not have to actually switch to Verizon, you can still use Redpocket but have them send you a Verizon linked SIM once you are on Verizon firmware.
ChazzMatt said:
As for spending money on Verizon to get VOLTE, there are several Verizon MVNOs that are less expensive than Verizon proper and will still do the trick. Both Visible and Total Wireless are even owned by Verizon, like Cricket is owned by AT&T.
RedPocket also offers Verizon-network SIM cards. They are also a Verizon MVNO. Which carrier service are you using with your RedPocket? They offer choice of AT&T (most common), T-Mobile and Verizon. I searched your posts in this thread and you don't say which you have -- so I assume the AT&T-linked SIM card? If you flash the last Oreo TWRP-flashable zip for Verizon, and you want to keep RedPocket, just have them ship you the Verizon-linked SIM card. You should then have VoLTE.
NOTE: You would still need to use an old Verizon phone to activate that SIM card, but then you could put it into your "VS996". I'm only suggesting a way to not have to actually switch to Verizon, you can still use Redpocket but have them send you a Verizon linked SIM once you are on Verizon firmware.
Click to expand...
Click to collapse
Got it, if flashing is all I have to do, this will be simple.
I was not clear, I did mean verizon MVNOs, meant more verizon in broader sense: CDMA. I am currently on red pocket T mobile. I was previously on Ting. Had similar issues on both with randomly losing service. It was bearable, but since 3G shutdown timeframe, this became a larger and more frequent issue. Currently, if I turn on data, I get Edge service (I read this is 2g?), otherwise when I am having a texting conversation, I am regularly losing service completely and do not have strong service in places where other Tmobile users have regular service.
On another note, I am looking to swap from red pocket; I spoke to customer service about call records, was told several times they would be sent to me, never received anything. Red pocket prices are hard to beat though.
I impulse bought a pixel 7 unlocked too (there were some incentives that were hard to resist). So, I will probably swap to that phone while holding onto this one and tinkering to see if it was a phone issue, US998 issue, SIM issue, service issue... then give the phone to family in a year or so.

Emergency Calls Only on LTE

Hello!
Can someone please help me with this?
Everything was fine until 2-3 days ago. When all of a sudden I was unable to send text messages or make phone calls. All the while I could access internet without any issues.
If I switch to 2G or EDGE for the Subnetwork, I can make calls and send SMS.
How can I fix this?
Could dropping the phone have caused this?
Dropping could certainly break something, of course, but let's assume that's not it.
What carrier? Is the phone officially supported by them (ie, IMEI matches the carrier)? Are you on their official ROM? Does/did your VOLTE work (before and after the "few days ago")?
Some carriers are switching over to VOLTE-only setups, so they may be testing that to see what works/doesn't before they make it final. In other words, maybe your phone is not "officially" supported by VOLTE on the carrier, which is why it's failing? Without VOLTE, I think text may fail as well (even if you're not actively on a call?)
That would be my first guess. In my case, for example, I was on a US998 phone (per IMEI) running VS996 on Verizon. Since the IMEI didn't match a VZ phone, they refused to say it was compatible (even though it worked fine for many years). The IMEI stuff is a bunch of BS, but that's a whole separate topic... but I wonder if this is what you're running into. It's the carrier's way to force you into "their" device, even though it's not any different from any other variant (when the proper ROM is installed).
schwinn8 said:
Dropping could certainly break something, of course, but let's assume that's not it.
What carrier? Is the phone officially supported by them (ie, IMEI matches the carrier)? Are you on their official ROM? Does/did your VOLTE work (before and after the "few days ago")?
Some carriers are switching over to VOLTE-only setups, so they may be testing that to see what works/doesn't before they make it final. In other words, maybe your phone is not "officially" supported by VOLTE on the carrier, which is why it's failing? Without VOLTE, I think text may fail as well (even if you're not actively on a call?)
That would be my first guess. In my case, for example, I was on a US998 phone (per IMEI) running VS996 on Verizon. Since the IMEI didn't match a VZ phone, they refused to say it was compatible (even though it worked fine for many years). The IMEI stuff is a bunch of BS, but that's a whole separate topic... but I wonder if this is what you're running into. It's the carrier's way to force you into "their" device, even though it's not any different from any other variant (when the proper ROM is installed).
Click to expand...
Click to collapse
Carrier texts should theoretically still work as they are "data". It's the "voice" part of VoLTE that won't work. That's why I can still receive carrier texts on my Galaxy Note 9 with AT&T -- which still has older firmware (so I can be rooted). A few months ago, I lost the ability to make/receive phone calls on my AT&T number when 3G towers were decommissioned in my area... But luckily I have Google Voice number, which also uses "data" (VoIP) so I make/receive all my Google Voice phone calls. (That's been my main phone number for years.)
However, I no longer can make/receive AT&T phone number calls -- which is fine. I switched Google Voice settings to data/Wi-Fi only instead of piggy backing on carrier phone number. Yet, I still receive AT&T texts, which is good because my bank insists on using a "real" (carrier) phone number for SMS security code confirmation.
Amer28 said:
Hello!
Can someone please help me with this?
Everything was fine until 2-3 days ago. When all of a sudden I was unable to send text messages or make phone calls. All the while I could access internet without any issues.
If I switch to 2G or EDGE for the Subnetwork, I can make calls and send SMS.
How can I fix this?
Could dropping the phone have caused this?
Click to expand...
Click to collapse
You are in Portland? What carrier are you using that still has 2G and Edge?
ChazzMatt said:
You are in Portland? What carrier are you using that still has 2G and Edge?
Click to expand...
Click to collapse
I'm with a company that uses T-Mobile towers. I connect just fine with 4G LTE, and get reasonably good speeds over it. But when I'm on 4G, I cannot make or receive calls or text. It says Emergency Calls Only.
So far, I've tried everything. I resettled network. I looked for different APN values that may fix the issue. When I couldn't think of anything else, I did a factory reset. (I mean, I wiped Data, and all other partitions in TWRP except for System and SD Card.) There have been no changes.
I'm starting to think the issue may be hardware, I did drop the phone a couple of times the day it stopped working. Though I usually end up dropping the phone once a day or every two days. I can't believe the screen hasn't cracked yet, at all. Could a drop from 3-4 feet on hard surface like tiles damage the antenna in such a way that only 4G data works?
I'm ready to give up and buy a new phone even though I can't really afford it. It would be awesome if I can get this to work.
schwinn8 said:
Dropping could certainly break something, of course, but let's assume that's not it.
What carrier? Is the phone officially supported by them (ie, IMEI matches the carrier)? Are you on their official ROM? Does/did your VOLTE work (before and after the "few days ago")?
Some carriers are switching over to VOLTE-only setups, so they may be testing that to see what works/doesn't before they make it final. In other words, maybe your phone is not "officially" supported by VOLTE on the carrier, which is why it's failing? Without VOLTE, I think text may fail as well (even if you're not actively on a call?)
That would be my first guess. In my case, for example, I was on a US998 phone (per IMEI) running VS996 on Verizon. Since the IMEI didn't match a VZ phone, they refused to say it was compatible (even though it worked fine for many years). The IMEI stuff is a bunch of BS, but that's a whole separate topic... but I wonder if this is what you're running into. It's the carrier's way to force you into "their" device, even though it's not any different from any other variant (when the proper ROM is installed).
Click to expand...
Click to collapse
I'm on T-Mobile towers with the US998. I don't think there is an issue with IMEI. How would I connect to data with 4G if that was the case?
I never had Volte on this phone. I do recall seeing it when I first got it but I'm running stock rooted Android 9.
When I say it used to work a few days ago, I mean it just stopped working at one point. I wanted to make a phone call, and all of a sudden, I couldn't. I noticed then that it says Emergency Only sign, so I walked around the house for about 15 mins to try to get signal. Then I went to my car and drove around, but nothing.
I messed around with Network settings, and figured out that Voice and TXT worked when I switch to a lower 'Sub-Network' setting that says, "GSM / GSPR / EDGE Only".
To get 4G Data back, I have to switch it back to "LTE/Legacy 3GPP multi"
These two are found under "GSM/UMTS Settings", after clicking on "System Select" in "Mobile Networks ".
I want to also mention that my carrier website has been talking about a data migration that would affect phones using their old SIM Card.
When I saw that, I called them and had them send me a new SIM. I thought surely this must be it, but the new SIM works exactly like the old one.
Perhaps the migration or whatever it is they did that required new SIM cards just doesn't work well with my phone? Even though, before putting the order in, the rep I spoke to did check my IMEI and said that my phone is compatible.
Agreed, it doesn't sound like an IMEI issue.
FWIW, I showed a 4G connection on a phone (I don't remember if it was my V30 or a Galaxy S10+ that I was going to replace it with). On that phone, at one point, but there was no actual connection. So, the indicators aren't always accurate. That's why I thought maybe the data isn't really working, and if data isn't working then VOLTE won't work... and with many of the carriers switching off non-VOLTE calling, that could kill the ability to make calls?
In your case, you said data worked... but if VOLTE was never enabled, and the carrier dropped non-VOLTE, then, again, you may lose calling.
In any case, these were my theories. I think you're on top of the situation but I don't have any other ideas for you to try...
Instead of buying a new phone, have you considered installing and setting up Google Voice, as ChazzMatt said? I recently had to do that because AT&T's 3G shutdown meant that I could no longer place or receive calls. My quick guide on doing that is here: https://forum.xda-developers.com/t/...-based-custom-roms-when.4138223/post-87342453
I don't know why you can't also send or receive texts, but the Google Voice app has the ability to do that, so maybe try using that after you've set it up.
Amer28 said:
I'm on T-Mobile towers with the US998. I don't think there is an issue with IMEI. How would I connect to data with 4G if that was the case?
I never had Volte on this phone. I do recall seeing it when I first got it but I'm running stock rooted Android 9.
When I say it used to work a few days ago, I mean it just stopped working at one point. I wanted to make a phone call, and all of a sudden, I couldn't. I noticed then that it says Emergency Only sign, so I walked around the house for about 15 mins to try to get signal. Then I went to my car and drove around, but nothing.
I messed around with Network settings, and figured out that Voice and TXT worked when I switch to a lower 'Sub-Network' setting that says, "GSM / GSPR / EDGE Only".
To get 4G Data back, I have to switch it back to "LTE/Legacy 3GPP multi"
These two are found under "GSM/UMTS Settings", after clicking on "System Select" in "Mobile Networks ".
Click to expand...
Click to collapse
There's been reports T-Mobile which is now merged with Sprint has borked the ability for VoLTE/VoWiFi calling on US998 firmware phones (native or Frankenstein'ed). Apparently they only allow it now on T-Mobile H932, whereas pre merger they were happy to give VoLTE and voWi-Fi calling to "US998" phones
First, it was reported with new SIM cards they were distributing earlier this year. Then people who kept their old SIM cards found they didn't work after a forced "security update."
This seems to have also trickled down to the T-Mobile MVNOs.
This is why we told someone else recently they should probably convert their phone from US998 on T-Mobile to Verizon VS996 firmware.
Then get a Verizon sim card or Verizon MVNO SIM card, and activate it in an old cracked screen Verizon phone off eBay, then put that already-activated SIM card into their "VS996" V30.
They will have VoLTE and VoWi-Fi calling.
Alternatively, if you really want to stick with T-Mobile network, you can do what @osprey00 suggested -- which is get a Google Voice number and use it as a tool to forward your carrier calls to it.
You can read his post, see his experiences, and see if this would apply to you.
For ME -- I've been using Google Voice for the past 10 years as my main phone number. I ported my carrier phone number at the time to Google Voice. Then got throwaway carrier numbers (whoever had cheapest plan) but never gave those to my friends. To my friends nothing ever changed. I've had the same "number" for the past two decades.
But within the past couple years, I had to start giving my bank and my cable company my carrier phone number for SMS security codes. Very annoying, because in the past they used my Google Voice number to text me with no problem.
So, even though under my current firmware (on my rooted Note 9) I cannot get carrier phone calls, I still have LTE data. And with the LTE data, I can use Google Voice (calls and texts) because it's VoIP. I also get AT&t carrier texts, as that is also data. It's just AT&T phone calls I cannot send or receive.
AT&T deactivated the SIM card in my native US998 V30+ and sent me a replacement phone, which is a Samsung Note 9. I'm staying with AT&T for a reason. Otherwise I would probably pull the "V30" Verizon trick also.
I bought both my wife and my elderly mother 64GB V35 phones -- which is basically an upgraded 64GB V30. (They previously had native US998 V30.) AT&T gives V35 VoLTE and WiFi calling, and for them there was nothing new to learn.
ChazzMatt said:
There's been reports T-Mobile which is now merged with Sprint has borked the ability for VoLTE/VoWiFi calling on US998 firmware phones (native or Frankenstein'ed). Apparently they only allow it now on T-Mobile H932, whereas pre merger they were happy to give VoLTE and voWi-Fi calling to "US998" phones
First, it was reported with new SIM cards they were distributing earlier this year. Then people who kept their old SIM cards found they didn't work after a forced "security update."
This seems to have also trickled down to the T-Mobile MVNOs.
This is why we told someone else recently they should probably convert their phone from US998 on T-Mobile to Verizon VS996 firmware.
Then get a Verizon sim card or Verizon MVNO SIM card, and activate it in an old cracked screen Verizon phone off eBay, then put that already-activated SIM card into their "VS996" V30.
They will have VoLTE and VoWi-Fi calling.
Alternatively, if you really want to stick with T-Mobile network, you can do what @osprey00 suggested -- which is get a Google Voice number and use it as a tool to forward your carrier calls to it.
You can read his post, see his experiences, and see if this would apply to you.
For ME -- I've been using Google Voice for the past 10 years as my main phone number. I ported my carrier phone number at the time to Google Voice. Then got throwaway carrier numbers (whoever had cheapest plan) but never gave those to my friends. To my friends nothing ever changed. I've had the same "number" for the past two decades.
But within the past couple years, I had to start giving my bank and my cable company my carrier phone number for SMS security codes. Very annoying, because in the past they used my Google Voice number to text me with no problem.
So, even though under my current firmware (on my rooted Note 9) I cannot get carrier phone calls, I still have LTE data. And with the LTE data, I can use Google Voice (calls and texts) because it's VoIP. I also get AT&t carrier texts, as that is also data. It's just AT&T phone calls I cannot send or receive.
AT&T deactivated the SIM card in my native US998 V30+ and sent me a replacement phone, which is a Samsung Note 9. I'm staying with AT&T for a reason. Otherwise I would probably pull the "V30" Verizon trick also.
I bought both my wife and my elderly mother 64GB V35 phones -- which is basically an upgraded 64GB V30. (They previously had native US998 V30.) AT&T gives V35 VoLTE and WiFi calling, and for them there was nothing new to learn.
Click to expand...
Click to collapse
I think it was a hardware problem, honestly.
No matter what I did, I even tried different ROM to ensure I didn't mess around with root settings and somehow enabled or disabled something that I should not have. I tried flashing stock radios, and no, nothing would fix it.
I took my brothers phone to see if the SIM card would work with his phone, an unlocked Google FI phone. As soon as I installed the SIM, and booted up the phone, I could tell it was working perfectly even on the lock screen. Right away the status showed the name of the wireless company, and active 5G data icon on the status.
I must have damaged the internal radio or the LTE data modem when I dropped the phone last. The screen of the phone never broke even though I dropped the phone countless times, though the back glass has cracked lines all over even if the surface is still smooth and the phone continued being waterproof (I tested).
Anyway, I have since bought a new phone and the Data/Text/Talk all work perfectly on it.
I'm not sure what I'll do with this phone, as selling it wouldn't be ethical. And I doubt anyone would buy a phone with the warning that service may not work.
Ah well, I may just keep and use it as a test device.
Thanks to all who tried to help.
Amer28 said:
I think it was a hardware problem, honestly.
No matter what I did, I even tried different ROM to ensure I didn't mess around with root settings and somehow enabled or disabled something that I should not have. I tried flashing stock radios, and no, nothing would fix it.
I took my brothers phone to see if the SIM card would work with his phone, an unlocked Google FI phone. As soon as I installed the SIM, and booted up the phone, I could tell it was working perfectly even on the lock screen. Right away the status showed the name of the wireless company, and active 5G data icon on the status.
I must have damaged the internal radio or the LTE data modem when I dropped the phone last. The screen of the phone never broke even though I dropped the phone countless times, though the back glass has cracked lines all over even if the surface is still smooth and the phone continued being waterproof (I tested).
Anyway, I have since bought a new phone and the Data/Text/Talk all work perfectly on it.
I'm not sure what I'll do with this phone, as selling it wouldn't be ethical. And I doubt anyone would buy a phone with the warning that service may not work.
Ah well, I may just keep and use it as a test device.
Thanks to all who tried to help.
Click to expand...
Click to collapse
tried a rom on a j7 2015 because android 6 is going to be left and I only get emergency calls on lte and on 3g, no problem. It's not imei problem maybe exynos processor. I went back to 6.0.1 and no problem with 4g lite. By the way, I'm not in the USA.

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