Related
Hi everyone
I am in the UK and bought the Note 4 Global version, as in the UK my provider uses Band 20
I am on Tesco, which piggy-backs the O2 network
However, on inserting the sim I receive the No Network error.
Tesco give me the usual "we don't sell those handsets so we can't provide technical support blah blah" "It must be locked blah blah"
The sim is fine as it was in his iPhone 5 (and still is because this won't connect to Tesco)
The Mobile Networks setting has been changed to what was on the previous phone, but with no joy.
Any ideas anyone?
Thanks in advance
Edit for stupidity:
Android 7.0 NRD90M
MIUI ver 9.0.5.0
Have you tried any other sim card in the phone? You can get one of those cheapie PAYG sims (for example, EE) from Tesco or your corner shop and see whether it has the same problem (which might point to a hardware issue or something funny going on with your ROM). I am not sure why you would have had to change the mobile networks setting. That should not be necessary at all.
DarthJabba9 said:
Have you tried any other sim card in the phone? You can get one of those cheapie PAYG sims (for example, EE) from Tesco or your corner shop and see whether it has the same problem (which might point to a hardware issue or something funny going on with your ROM). I am not sure why you would have had to change the mobile networks setting. That should not be necessary at all.
Click to expand...
Click to collapse
Forgot to mention this is my son's phone.
I have an EE pay monthly sim. Tried that. Same thing. No Network.
Irony in the fact that it says TESCO 4G in the top band by the clock when he puts his sim in the Note 4 and 2 bars on connection.
Cannot ring out and cannot accept a call
o1nk said:
Forgot to mention this is my son's phone.
I have an EE pay monthly sim. Tried that. Same thing. No Network.
Irony in the fact that it says TESCO 4G in the top band by the clock when he puts his sim in the Note 4 and 2 bars on connection.
Cannot ring out and cannot accept a call
Click to expand...
Click to collapse
Silly question, are you sure it's global version? A lot of "global" word from Chinese phones.
Is this the package?
o1nk said:
Forgot to mention this is my son's phone.
I have an EE pay monthly sim. Tried that. Same thing. No Network.
Irony in the fact that it says TESCO 4G in the top band by the clock when he puts his sim in the Note 4 and 2 bars on connection.
Cannot ring out and cannot accept a call
Click to expand...
Click to collapse
Ok, it definitely should work with EE, and so this is clearly not a Tesco mobile problem. Either the hardware is faulty or the ROM (particularly the modem drivers) is faulty. You might want to return the phone.
Stevica Smederevac said:
Silly question, are you sure it's global version? A lot of "global" word from Chinese phones.
Is this the package?
Click to expand...
Click to collapse
I have the same sticker in the same corner
I had to order the Global specifically for the Band 20 in the UK
Any way to tell if it's not?
DarthJabba9 said:
Ok, it definitely should work with EE, and so this is clearly not a Tesco mobile problem. Either the hardware is faulty or the ROM (particularly the modem drivers) is faulty. You might want to return the phone.
Click to expand...
Click to collapse
Darth, I think you may be onto something. You just triggered something I read earlier
Is this the same issue?
https://xiaomifirmware.com/guides-and-tips/fix-missing-network-issue-redmi-4/
o1nk said:
I have the same sticker in the same corner
I had to order the Global specifically for the Band 20 in the UK
Any way to tell if it's not?
Click to expand...
Click to collapse
Try this https://play.google.com/store/apps/details?id=net.simplyadvanced.ltediscovery
I suppose that the sim card is 4g card, right?
o1nk said:
Darth, I think you may be onto something. You just triggered something I read earlier
Is this the same issue?
https://xiaomifirmware.com/guides-and-tips/fix-missing-network-issue-redmi-4/
Click to expand...
Click to collapse
It looks like the same issue (on a different Xiaomi phone). The solution is probably the same - flashing the appropriate modem (firmware) files, or flashing a new complete ROM. I wasn't sure you wanted to go down that route, as it would give the vendor an escape route if something goes awry, or if the process doesn't solve the problem.
Stevica Smederevac said:
Try this https://play.google.com/store/apps/details?id=net.simplyadvanced.ltediscovery
I suppose that the sim card is 4g card, right?
Click to expand...
Click to collapse
His is a 6GB Tesco 4G and mine is a 40GB Virgin/EE 4G
His sim states Tesco 4G in top right, my EE states No Service.
LTE Discovery. What am I looking for in there?
In the Sim 1 section it says:
Band 20
GCI: 00144E78
PCI: 71
TAC: 16624
-110dBm
On Signals it says EARCFN (LTE Band 20)
Just been through my email confirmation and this is the one they sent me
https://www.geekbuying.com/item/Off...Note-4-4G-64GB-Smartphone---Black-379093.html
Now forgive me if I'm wrong but that says HK Stock Global
What's the difference between that and the Global Rom?
Darth, am I going down the flashing routine? Not bothered if I am as long as it works
Jesus H, it seems everything I buy I have to reflash these days.
M8 boxes, Kindle Fires, phones
o1nk said:
His is a 6GB Tesco 4G and mine is a 40GB Virgin/EE 4G
His sim states Tesco 4G in top right, my EE states No Service.
LTE Discovery. What am I looking for in there?
In the Sim 1 section it says:
Band 20
GCI: 00144E78
PCI: 71
TAC: 16624
-110dBm
On Signals it says EARCFN (LTE Band 20)
Click to expand...
Click to collapse
If the phone sees the signal and it does detect 4g ,than the phone is ok.
The problem is that 110db . That's practically dead zone. I would say your location is the problem. I know you said that Samsung has 2 bars but this is crappy phone .
Just to be sure, can you check in a a place with strong 4g signal?
Stevica Smederevac said:
If the phone sees the signal and it does detect 4g ,than the phone is ok.
The problem is that 110db . That's practically dead zone. I would say your location is the problem. I know you said that Samsung has 2 bars but this is crappy phone .
Just to be sure, can you check in a a place with strong 4g signal?
Click to expand...
Click to collapse
Believe it or not, Tesco has really strong 4G in my village. Never a problem on that carrier
EE however is ****. I have "H" on their network and -123 dBm
But I don't use my data at home
My main problem lies with the calls and texts not being able to be connected
It seems I have been sent a HK Global Rom? This has Band 20
Is this an issue? I am in the UK. Should I have been sent a Global Rom? But this doesn't have Band 20
Is it the modem driver issue as stated earlier?
o1nk said:
Believe it or not, Tesco has really strong 4G in my village. Never a problem on that carrier
EE however is ****. I have "H" on their network and -123 dBm
But I don't use my data at home
My main problem lies with the calls and texts not being able to be connected
It seems I have been sent a HK Global Rom?
Is this an issue? I am in the UK. Should I have been sent a Global Rom?
Click to expand...
Click to collapse
It should have come with global rom . I'm not sure though that it would effect frequency.
Try to change from global to lte/wcdma in preferred network
o1nk said:
Darth, am I going down the flashing routine? Not bothered if I am as long as it works
Click to expand...
Click to collapse
It seems that you will have to go down that route, unless you return the phone. Whether it works or not will depend on whether it is a hardware problem or just a ROM/firmware problem.
By the way, there is a firmware repository here: https://forum.xda-developers.com/showpost.php?p=73534612&postcount=89
This requires you to have TWRP recovery.
DarthJabba9 said:
It seems that you will have to go down that route, unless you return the phone. Whether it works or not will depend on whether it is a hardware problem or just a ROM/firmware problem.
By the way, there is a firmware repository here: https://forum.xda-developers.com/showpost.php?p=73534612&postcount=89
This requires you to have TWRP recovery.
Click to expand...
Click to collapse
Fired an email of to Geekbuying
See if they want me to send it back or give permission to add the modem drivers with warranty intact
Just noticed that with WIFI on it says I have Tesco 4G. When I turn WIFI off I have no service.
Bizarrely, after reading, this has been going on since the Note 3
Strangely, the phone is giving 4 bars for connectivity for calls. Yet you just try and a make a call
It's always my luck when people order from China and get this wonderful, working, all-singing all-dancing product ..... then I order one!
o1nk said:
It's always my luck when people order from China and get this wonderful, working, all-singing all-dancing product ..... then I order one!
Click to expand...
Click to collapse
These things are often a hit-and-miss affair, especially when buying from outside the EU. I bought mine (two) from eBay (UK and Ireland based sellers) - much easier to get refunds via PayPal (and more likely to get a proper Global ROM). But it is possible that your problem will be fixed by flashing the latest global stable ROM.
Update
Took it to the Tesco Phone Shop this morning and they couldn't get any of their settings to work. Consistently No Network. Wouldn't even connect to the Tesco guy's Vodafone sim.
Tried a Virgin sim and it wouldn't connect either
Guessing something wrong with the global rom now?
As with Note 3, MIUI 8 and the missing modem drivers?
Sparked an email back to Geekbuying to see what they can do
Thanks all
o1nk said:
Update ...
Guessing something wrong with the global rom now?
As with Note 3, MIUI 8 and the missing modem drivers?
Click to expand...
Click to collapse
Possibly - but there is also a possibility that it is a hardware problem. That will only become clear after successfully flashing a complete ROM (global or otherwise). Whether the ROM is global or China should not have any effect on connecting to a phone network (especially EE).
Which version of MIUI are you on? Try updating of there is an update available and see if that helps.
Both of them do not work on t-mobile even though they have all the bands. Signal is strong. Is there some command that will let me check radio status ?Mate 10 has similar bands to Mate 9 and my mate 9 works fine even if I disable volte. Mate 10 sometimes will fail to make a phone call or if it is being called it will go straight to voicemail. When I get connected I can't hear anything on my Mate 9, but I can on op3t.
Is anyone successfully using it on tmo usa ? This makes no sense to me.
I did factory resets, different sims and had t-mobile refresh the lines
aim1999x said:
Both of them do not work on t-mobile even though they have all the bands. Signal is strong. Is there some command that will let me check radio status ?Mate 10 has similar bands to Mate 9 and my mate 9 works fine even if I disable volte. Mate 10 sometimes will fail to make a phone call or if it is being called it will go straight to voicemail. When I get connected I can't hear anything on my Mate 9, but I can on op3t.
Is anyone successfully using it on tmo usa ? This makes no sense to me.
I did factory resets, different sims and had t-mobile refresh the lines
Click to expand...
Click to collapse
I've been using the ALP-L29 on TMo for a month now and no issues with voice or data. Just took the sim out of my Nexus 6 and put it into the mate 10. Didn't do anything else.
Maybe check the apn? As far as bands, you can download Network Cell Info Lite to see what bands the phone is connecting to.
I have had my Mate 10 (non-pro) for about a week now and I use it on T-Mobile just fine. Why not install a 3rd party app like Open Signal from the Play Store and see what is going on? Also an app like GPS Status is good for GPS functionality. The fact that you have two of them, and both do not work, makes me suspicious that something else is going on with them both...maybe they are not flashed properly with the correct regional software?
aerohp said:
I've been using the ALP-L29 on TMo for a month now and no issues with voice or data. Just took the sim out of my Nexus 6 and put it into the mate 10. Didn't do anything else.
Maybe check the apn? As far as bands, you can download Network Cell Info Lite to see what bands the phone is connecting to.
Click to expand...
Click to collapse
The APN is correct, I compared it to Mate 9 is exact same. I will have to check that app and see what it says
jaseman said:
I have had my Mate 10 (non-pro) for about a week now and I use it on T-Mobile just fine. Why not install a 3rd party app like Open Signal from the Play Store and see what is going on? Also an app like GPS Status is good for GPS functionality. The fact that you have two of them, and both do not work, makes me suspicious that something else is going on with them both...maybe they are not flashed properly with the correct regional software?
Click to expand...
Click to collapse
They both were brand new and sealed from 2 different sellers, they are different colors as well. I will check open signal app and see what it says. What I don't understand how 2 of them can have exactly same symptoms.
Does it show LTE signal at all for you guys ?
aim1999x said:
Does it show LTE signal at all for you guys ?
Click to expand...
Click to collapse
Yes, mine shows 4g but at times while at work it will drop to E due to the signal being week inside the building. I am also connecting on Band 4 most of the time.
aim1999x said:
The APN is correct, I compared it to Mate 9 is exact same. I will have to check that app and see what it says
Click to expand...
Click to collapse
This is what I have as my APN.
That is what I got as well for APN
Were they unlocked
Contact the seller... Something is wrong.
ppaganpr said:
Contact the seller... Something is wrong.
Click to expand...
Click to collapse
Those were from 2 different sellers. Hard to believe that they would have exact symptoms.
They are unlocked. I checked open signal and it says lte. Anyone can recommend any troubleshooting that could be done? I would like to keep the phone but I need it to work. I do not think both phones are just not working in exact same way. At this point I am not sure what else is left to trouble shoot.
In attached pictures what is the sim neighbor #1 that is the only thing different because it is not on my mate 9.
More neighbors , but there isn't any on Mate 9. Also everytime phone call is coming in it switches to 2g. Mate 9 doesn't switch for phone calls. Overall the network cell info app shows that mate 10 switches bands a lot .
Edit
Another thing I noticed is that tmo visual voicemail will never activate on Mate 10 but it is instant on Mate 9
Spent hours with tmobile and this is because no volte on those phones. If I turn volte off on mate 9 it acts the same way. So mate 10 is unusable where I live. It goes to voicemail 90% of time.
The workaround I got is forward all calls to to my google voice number. Works ok since it can use lte just fine.
Thats a bummer, I would reflash if I were you
yusssi said:
Thats a bummer, I would reflash if I were you
Click to expand...
Click to collapse
Reflash to what ?
To the same rom. Now, are they ORIGINALLY manufactured with that same rom? I purchased a 4/64 mocha from amazon ALP-L29 and was functioning flawlessly. Then returned it and purchased a 6/128 chinese version, rebranded to ALP-L29 and its functioning flawlessly (with T-MOBILE) so, the only thing I can think, based on your circumstances, is that there has to be something messed up with the rom/firmware. I would try either an update via FIRMWARE FINDER or a full rebranding to the same ALP-L29. Thats what I would do.
yusssi said:
To the same rom. Now, are they ORIGINALLY manufactured with that same rom? I purchased a 4/64 mocha from amazon ALP-L29 and was functioning flawlessly. Then returned it and purchased a 6/128 chinese version, rebranded to ALP-L29 and its functioning flawlessly (with T-MOBILE) so, the only thing I can think, based on your circumstances, is that there has to be something messed up with the rom/firmware. I would try either an update via FIRMWARE FINDER or a full rebranding to the same ALP-L29. Thats what I would do.
Click to expand...
Click to collapse
There is nothing wrong with it. It's the lack of volte. If I turn off volte on my mate 9 it acts the same way. I talked with t-force (tmo support) and because of the towers around me the phone doesn't switch quick enough to edge to ring. If I leave it on edge it works fine, but it can't switch to edge from lte quickly enough.
After noticing no one on the internet has a fix for this and after countless failed attempts the answer is simple it is the country code and area code causing the issue. I was also able to fix my wife's mi note 9 pro the same way make sure you have roaming for area codes and remove any country codes from your contacts.
To test, dial a number local to you that is not in your contacts. Make sure VOLTE is turned on and only dial the 7 main digits of the number (no country code exe. +1 and no area code exe. (202) only exe.555-5555) the call should now work.
I believe as long as call roaming is on you should be able to use area codes and for out of state you will probably have to turn off VOLTE for now until Xiaomi realizes American dialing is different from Europon and they mass fix this in all those phones. Soon all the carriers will be VOLTE only and if they do not fix this they will be losing a lot of customers
Hope this helped you guys
I Wrote Xiaomi letting them know about this bug. Here is the reply:
Dear Sir/Madam,
Greetings from Xiaomi U.S.A!
We would like to say thank you for the time and we appreciate every single feedback customer are giving us. This will help us to be aware on how we can improve our service and products. Rest assured that we are trying are best to provide the best that we can do for our valued customer like you.
If you have other concerns, please feel free to contact us.
Best Regards,
Mario
Xiaomi Customer Support
Thanks! I turned on data roaming and now VoLte and VoWifi is working perfect on my X3 on T-Mobile here in the states. Good work.
lennies41 said:
Thanks! I turned on data roaming and now VoLte and VoWifi is working perfect on my X3 on T-Mobile here in the states. Good work.
Click to expand...
Click to collapse
Never mind. It had nothing to do with data roaming. But you were right all you have to do is call a 7 digit number and VoLte will work. Also wifi calling is not working. I jumped the gun.
lennies41 said:
Never mind. It had nothing to do with data roaming. But you were right all you have to do is call a 7 digit number and VoLte will work. Also wifi calling is not working. I jumped the gun.
Click to expand...
Click to collapse
Roaming fixed my wife's and mine phones to use the area codes and check your settings for wifi calling mine works perfectly...
My phone has been HD with WiFi calling ever since I discovered this no issues at all.
T-mobile says No VOLTE, no service soon to come if your phone does not have VOLTE it won't work there other phone carriers follow as well like At&t
If your T-Mobile phone doesn't have VoLTE, you could get kicked off the network soon
Metro by T-Mobile will also be affected, along with MVNOs like Google Fi, Mint, and Ting (Update: T-Mobile statement)
www.androidpolice.com
I live in USA, i removed the 1+ from each contact, and works perfectly. I tried calling myself from one of my contacts phone, and i got the call through, but i can't call my voice mail. I tried turning on roaming always, but didn't work. But i'm still worried some calls might never come through. I'm on xiaomi.eu 12.0.7
So I finally got voLTE working here in the states. We just need to figure out how to remove country code when it comes to voice calling. The phone works wonderfully with Straight talk. I wonder if purchasing an international plan would fix the incoming call issue.
Info:
Cellular Provider: T-Mobile
ROM: Stock Chinese ROM
Location: USA
Problem: Sim card stops working after making a call. Can't receive calls either.
I just bought the Mix 4 around two weeks ago and just put in a new SIM card that I just got today. The SIM card was already tested to be working fine on my Vivo NEX S. Calls, text and data all work fine with the Vivo NEX S. When in my Mix 4, it works fine when it comes to data and texting. But when I try to call, the SIM card just stops working. The Mix 4 is able to detect it, but it's unusable until I put that SIM card inside my Vivo NEX S and then putting it back in the Mix 4. When attempting to call with the Mix 4, when the call goes through, the SIM just turns off or is disabled. But the call will go through and I will be able to talk to the recipient for a couple seconds before it stops due to lack of data/loss connection. I also can't seem to receive calls.
I also have a working Verizon sim card and the exact same thing happens. I've also taken a look at the APN and everything looks fine.
Is there anything I can do?
Sounds like a phone issue.
Same here, just got my T-Mobile sim card today and mix4 shows no signal.
Strange, running 3 nand 02 sim daily and no issues, but on xiaomi.eu miui beta 13
jrvenge said:
Strange, running 3 nand 02 sim daily and no issues, but on xiaomi.eu miui beta 13
Click to expand...
Click to collapse
Based on feedbacks from Reddit and xiaomi forum, I notice it only occurred for US carriers.
I tried verison, at&t, and t-mobile, but none of it worked.
MIX 4 seems to have issue for network registering, which renders it unusable in US.
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.