No ATT HD Voice on unlocked S9+ - Samsung Galaxy S9+ Questions & Answers

Hello,
I just bought the S9+ unlocked today at best buy. I love the phone and I opted in for unlocked version so that I can root the thing later if I wish.
So, I would really like to have the HD voice option, but I found out that you need a carrier phone to be able to have wifi-calling and hd voice. My parent can hear me great on their end (they have iphones) but on my end I have the same old ****ty voice quality.
Is flashing ATT firmware (and getting their bloatware) the only way to get the option? Right now, when I go into settings-> connections-> mobile networks, the option isnt even there.

Reason is the same as I posted on a different thread. Flashing at&t firmware will not fix the problem. Subsequent comments in the thread may be of interest.
https://forum.xda-developers.com/showpost.php?p=77649772&postcount=7

Ouch. That sucks. I read somewhere that tmobile and sprint don't lock unlocked phones out of their volte and wifi calling. Does Verizon use same tactics as att or will they make it available to me as well?

fen-q said:
Ouch. That sucks. I read somewhere that tmobile and sprint don't lock unlocked phones out of their volte and wifi calling. Does Verizon use same tactics as att or will they make it available to me as well?
Click to expand...
Click to collapse
Yeah att doesn't have volte on any unlocked Phones. I put a sim in my Sprint S8 and it dropped to H+ during the call where TMO and vzw stay on VOLTE on my phone.
Sent from my SM-G950U using Tapatalk

Same issue in Canada - Carrier Unlocked device purchased do from Samsung & none of the Canadian Carriers support VoLTE or WiFi Calling - This is extremely unethical on the part of the partnership between Samsung & the Carriers! We all know that the Carriers are Samsung's biggest customers - But to make key features unavailable is unconscionable! ?
Sent from my SM-G965W ??

shaggyskunk said:
Same issue in Canada - Carrier Unlocked device purchased do from Samsung & none of the Canadian Carriers support VoLTE or WiFi Calling - This is extremely unethical on the part of the partnership between Samsung & the Carriers! We all know that the Carriers are Samsung's biggest customers - But to make key features unavailable is unconscionable!
Sent from my SM-G965W
Click to expand...
Click to collapse
For the US carriers though... if i switch to tmobile, will hd voice work if i call my parents on att? Anyone have real life experience?

fen-q said:
For the US carriers though... if i switch to tmobile, will hd voice work if i call my parents on att? Anyone have real life experience?
Click to expand...
Click to collapse
T-Mobile and Verizon customers both get VoLTE on Samsung factory unlocked phones. AT&T restricts by IMEI (as well as requiring their firmware). Sprint does not yet offer the feature at all on their network. It is unclear whether unlocked devices will get it once they do deploy it. Time will tell.

Related

Will Unlocked AT&T S8+ work with Sprint?

Based on what I read so far, only unlocked version of AT&T will work only with GSM provider. Would like confirmation of this. Thanks!
jklny said:
Based on what I read so far, only unlocked version of AT&T will work only with GSM provider. Would like confirmation of this. Thanks!
Click to expand...
Click to collapse
No, unfortunately.
Sent from my SM-G935U using Tapatalk
Uh... If it's an unlocked phone there is no reason it wont.
http://www.droid-life.com/2017/03/08/unlocked-galaxy-s8-plus-s8-fcc-smg950-smg955/
Optimumind... can you provide any explanation for your answer?
Unless something has changed, Sprint is CDMA, not GSM.
eatmeimadanish said:
Uh... If it's an unlocked phone there is no reason it wont.
http://www.droid-life.com/2017/03/08/unlocked-galaxy-s8-plus-s8-fcc-smg950-smg955/
Optimumind... can you provide any explanation for your answer?
Click to expand...
Click to collapse
An unlocked AT&T GS8 will work on other GSM networks but not on Sprint b/c Sprint won't add the AT&T GS8 IMEI to their system.
Sent from my SM-G935U using Tapatalk
The hardware on all the s8's are the same so technically it will work but the imei isn't white listed so you won't be able to activate it on sprint but the sprint version can be activated on att or any other gsm provider.
Sprint galaxy s8 works with tmobile and verizon
The hardware on all the s8's are the same so technically it will work but the imei isn't white listed so you won't be able to activate it on sprint but the sprint version can be activated on att or any other gsm provider.
Hey there. I have an S7 Edge unlock from t-mobile running the unlock firmware from G935U. Sprint SIM cards are lock, I have a friend who works for sprint. I have 3 Sprint S8 and S8+, 2 unlock and running on T-Mobile network. I took 1 of the SIM card and put in my Unlock S7 Edge, the phone just keep trying to connect to network and repeating the same process. Didn't work at all, but the Sprint S8's works excellent on T-Mobile network after flashing the UNLOCK firmware.
---------- Post added at 03:01 AM ---------- Previous post was at 02:53 AM ----------
I got 111.71 mbps download, 20 mbps upload speed from my Unlock Sprint S8+ running G955U1 unlock firmware on T-Mobile network. Couldn't ask for anything more than that.
I will provide my non Sprint S8 variant experience.....for any US S8, they all have the same hardware. I have noticed that ATT and TMO models have CDMA hardware, but are turned off in the carriers version of the firmware . Flashing the stock unlocked S8 firmware or the Sprint/VZW FW will enable the phones for use with CDMA and all LTE bands. I had an ATT version sim unlocked and attempted this on Verizon FW with a VZW sim and it worked perfect....but there is a major roadblock with Sprint. Sprint is the only carrier that I have tried that requires an update of the IMEI to the account (ie you cant just pop a sim in and the device works). VZW for example shows Unknown device on the account instead of an S8, but all the services still work. Sprint shows 3G for about 5 minutes, then you get a message that the sim is locked and to reboot or call support (not the same as the phones sim slot being locked, but more that the system cant register the sim/device combo). Sprint stores have the capability of adding IMEI's to the Sprint database, as long as the IMEI does not come back as ineligible. Well, I took the S8 to several stores and none of them could add it to the system. Several employees advised me that the IMEI's from other carrier's are blacklisted so that it can not be added and the only ones that the system would allow to add are IMEI's that were sold as unlocked or Sprint branded. If the IMEI can be white listed, then I am certain it would work.
mellojosh said:
I will provide my non Sprint S8 variant experience.....for any US S8, they all have the same hardware. I have noticed that ATT and TMO models have CDMA hardware, but are turned off in the carriers version of the firmware . Flashing the stock unlocked S8 firmware or the Sprint/VZW FW will enable the phones for use with CDMA and all LTE bands. I had an ATT version sim unlocked and attempted this on Verizon FW with a VZW sim and it worked perfect....but there is a major roadblock with Sprint. Sprint is the only carrier that I have tried that requires an update of the IMEI to the account (ie you cant just pop a sim in and the device works). VZW for example shows Unknown device on the account instead of an S8, but all the services still work. Sprint shows 3G for about 5 minutes, then you get a message that the sim is locked and to reboot or call support (not the same as the phones sim slot being locked, but more that the system cant register the sim/device combo). Sprint stores have the capability of adding IMEI's to the Sprint database, as long as the IMEI does not come back as ineligible. Well, I took the S8 to several stores and none of them could add it to the system. Several employees advised me that the IMEI's from other carrier's are blacklisted so that it can not be added and the only ones that the system would allow to add are IMEI's that were sold as unlocked or Sprint branded. If the IMEI can be white listed, then I am certain it would work.
Click to expand...
Click to collapse
Yup, Sprint sucks very well in this regard.
Sent from my SM-G955U1 using Tapatalk
This phones are listed among eligible phones for Sprint's BYOD 1 year free plan. Does it say something?
Samsung Galaxy S8 (Verizon, AT&T and T-Mobile)
Samsung Galaxy S8+ (Verizon, AT&T and T-Mobile)
Yes it will work, i put a freedom pop sim in, and it restarted with at&t logo
mellojosh said:
I will provide my non Sprint S8 variant experience.....for any US S8, they all have the same hardware. I have noticed that ATT and TMO models have CDMA hardware, but are turned off in the carriers version of the firmware . Flashing the stock unlocked S8 firmware or the Sprint/VZW FW will enable the phones for use with CDMA and all LTE bands. I had an ATT version sim unlocked and attempted this on Verizon FW with a VZW sim and it worked perfect....but there is a major roadblock with Sprint. Sprint is the only carrier that I have tried that requires an update of the IMEI to the account (ie you cant just pop a sim in and the device works). VZW for example shows Unknown device on the account instead of an S8, but all the services still work. Sprint shows 3G for about 5 minutes, then you get a message that the sim is locked and to reboot or call support (not the same as the phones sim slot being locked, but more that the system cant register the sim/device combo). Sprint stores have the capability of adding IMEI's to the Sprint database, as long as the IMEI does not come back as ineligible. Well, I took the S8 to several stores and none of them could add it to the system. Several employees advised me that the IMEI's from other carrier's are blacklisted so that it can not be added and the only ones that the system would allow to add are IMEI's that were sold as unlocked or Sprint branded. If the IMEI can be white listed, then I am certain it would work.
Click to expand...
Click to collapse
I had a similar experience with an Unlocked Galaxy S7 and Sprint. I actually had to get Samsung Tech support on a conference call with a Sprint Manager, because Sprint told my customer the the phone is incompatible with the Sprint network. After embarrassing the Sprint rep, he white listed the IMEI number on Sprint's network and the phone worked.
Also, MetroPCS has the same policy. You cannot just pop in a Metro Sim card. You have to call them and register the IMEI number. After about an hour tops, the phone will complete provisioning and be able to work on Metro's T-Mobile network.
T-Mobile is instant. You cab pop a T-Mobile Sim card into any sim unlocked variant and it will work. However you will need to go into settings and follow the T-Mobile instructions on how to set up the radio frequencies. The better way is to just flash the carrier's ROM version onto the phone. This way you will get the features and updates from the carrier. Carriers seem to get the Android updates faster than Samsung. A trade off for bloatware.
tempests said:
I had a similar experience with an Unlocked Galaxy S7 and Sprint. I actually had to get Samsung Tech support on a conference call with a Sprint Manager, because Sprint told my customer the the phone is incompatible with the Sprint network. After embarrassing the Sprint rep, he white listed the IMEI number on Sprint's network and the phone worked.
Also, MetroPCS has the same policy. You cannot just pop in a Metro Sim card. You have to call them and register the IMEI number. After about an hour tops, the phone will complete provisioning and be able to work on Metro's T-Mobile network.
T-Mobile is instant. You cab pop a T-Mobile Sim card into any sim unlocked variant and it will work. However you will need to go into settings and follow the T-Mobile instructions on how to set up the radio frequencies. The better way is to just flash the carrier's ROM version onto the phone. This way you will get the features and updates from the carrier. Carriers seem to get the Android updates faster than Samsung. A trade off for bloatware.
Click to expand...
Click to collapse
Maybe I should try this approach with my Galaxy S9+ (AT&T, unlocked).
Sprint is a PITA.
tempests said:
I had a similar experience with an Unlocked Galaxy S7 and Sprint. I actually had to get Samsung Tech support on a conference call with a Sprint Manager, because Sprint told my customer the the phone is incompatible with the Sprint network. After embarrassing the Sprint rep, he white listed the IMEI number on Sprint's network and the phone worked.
Also, MetroPCS has the same policy. You cannot just pop in a Metro Sim card. You have to call them and register the IMEI number. After about an hour tops, the phone will complete provisioning and be able to work on Metro's T-Mobile network.
T-Mobile is instant. You cab pop a T-Mobile Sim card into any sim unlocked variant and it will work. However you will need to go into settings and follow the T-Mobile instructions on how to set up the radio frequencies. The better way is to just flash the carrier's ROM version onto the phone. This way you will get the features and updates from the carrier. Carriers seem to get the Android updates faster than Samsung. A trade off for bloatware.
Click to expand...
Click to collapse
You may have been referring to me regarding the unlocked Galaxy S7 & Sprint. Many thanks for that one. I'm going through the same crap now with Universal unlocked IPhone 7. Sprint is a PITA!
I can confirm the SM-G955U from AT&T does work. I confirmed this via Sprint site. Just Google Sprint byod eligibility and you'll find the link.
My biggest roadblock was AT&T had a network lock on my phone so the sim Sprint sent couldn't be used. I then used the services provided by gsmzambia to network unlock the device. It's currently working on Sprint network.

Would ordering s9+ unlocked version from samsung work ok on ATT without any issues?

Pros/Cons?
Pro: No AT&T preinstalled bloat
I'm using an Essential PH-1 unlocked with AT&T. No problems.
Used a Mate 9 unlocked on ATT with no problem. Most US unlocked phones should work without any problems on ATT
VoLTE or HD calling as AT&T calls it might work on an unlocked phone if they will provision your line for the service. They did it for my Pixel 2 and it worked after I got a new sim. I don't think wifi calling will work on any phone except an AT&T device. I would make good use of this service so I'm opting for the AT&T version. If I find wifi calling works on an unlocked model I may switch but I don't think it will. We do some vacationing at a place with wifi but no cell service. My wife's AT&T iphone has it and it's pretty cool.
If the unlocked version is snapdragon then it will work just fine and lock to USA AT&T. With the S8 phones they were unlocked until you put a SIM in it and then it locks to that carrier. I'm curious is the unlocked version the exynos or the Snapdragon?
highaltitude said:
If the unlocked version is snapdragon then it will work just fine and lock to USA AT&T. With the S8 phones they were unlocked until you put a SIM in it and then it locks to that carrier. I'm curious is the unlocked version the exynos or the Snapdragon?
Click to expand...
Click to collapse
The snapdragon is the only processor sold in the usa whether you are unlocked or carrier specific.
Having issues with SM-G965F on AT&T LTE
I just activated my SM-G965F and I'm only getting 3G and 3.5G (H+). No LTE. If I change the mobile networks settings to nxtgenphone, it connects to LTE, then drops and I get no data. I can only use the 'phone' version. My AT&T account has a grayed out device for my account. Checking compatibility with the IMEI checker for AT&T says it cannot determine if it is compatible. the 2nd SIM slot IMEI number is considered invalid!
Heading to the AT&T store at the mall later... not expecting much help.
I have the Note 8 and it was a PITA to get it full working on AT&T. Only thing that interest me was the Volte for talking on the phone and data at the same time, never got it working 100%. Had AT&T provision with new chip still not working good, so I sold the unlocked and got an AT&T model and had it unlocked and all is working well.
Sent from my SM-G965U using Tapatalk
[Resolved] Having issues with SM-G965F on AT&T LTE
poodull said:
I just activated my SM-G965F and I'm only getting 3G and 3.5G (H+). No LTE. If I change the mobile networks settings to nxtgenphone, it connects to LTE, then drops and I get no data. I can only use the 'phone' version. My AT&T account has a grayed out device for my account. Checking compatibility with the IMEI checker for AT&T says it cannot determine if it is compatible. the 2nd SIM slot IMEI number is considered invalid!
Heading to the AT&T store at the mall later... not expecting much help.
Click to expand...
Click to collapse
It was not the APN settings, entirely. It was that myAT&T would not recognize my IMEI number as a 9+. So, working with a store clerk at the local mall, she suggested to punch in a fake(last number altered) IMEI number using the in-store SM-G965U models. Since this has nothing to do with actually logging in or SIM verification, it worked. The SIM does its job and my account has an S9 (not a plus) on it, so when I changed to the 'nxtgenphone' APN settings, it is 'allowed' to log in (that's my best guess, anyway).
There is no other reason why the SM-G965F would NOT work on AT&T LTE since it has 3 of the 4 LTE bands (band30 is not included, but is only used in new, dense environments to alleviate network congestion -- my understanding).
dmb219 said:
The snapdragon is the only processor sold in the usa whether you are unlocked or carrier specific.
Click to expand...
Click to collapse
So if I buy and ship an unlocked Galaxy S9 from Samsung website, it will have Snapdragon and not Exynos? I'm in a US territory.
I'm getting a good deal off their website with accessories and whatnot buying unlocked but I prefer Exynos
I'd rather not post and make a new thread. If someone else can confirm, I'd be much obliged
Yep it does. Just make sure it's on Snapdragon.

Wifi calling?

Hi g8x have a wifi calling?
Yes, my US version does.
Just recently got the unlocked version with the dual screen bundle (LM-G850QM). I'm using it on Verizon and the Wi-Fi calling is working! Just FYI as Wi-Fi calling never works on Verizon with unlocked phone that didn't come from Verizon. I did already have a Verizon SIM.....
No such option on the Canadian model.
Not even VoLTE.
I'm on the Rogers network, btw.
paolo21r said:
Hi g8x have a wifi calling?
Click to expand...
Click to collapse
Wi-Fi Calling (and other features such as VoLTE) are supported by the LG G8X so long as your carrier has enabled them.
ppczouz said:
No such option on the Canadian model.
Not even VoLTE.
I'm on the Rogers network, btw.
Click to expand...
Click to collapse
I find it odd that you don't have the option fir VoLTE Or VoWi-Fi... Rogers (at least last time I checked) supported all the IMS features, being VoLTE, ViLTE, VoWi-Fi, and ViWi-Fi. Is your phone purchased from Rogers?
ppczouz said:
No such option on the Canadian model.
Not even VoLTE.
I'm on the Rogers network, btw.
Click to expand...
Click to collapse
Mine has it on Bell.
True, Rogers support all the services, but they seem to operate on a white-listing model. If the device is not in their allow list, those features will not work.
Another example is the OnePlus phones, same thing.
But usually I see the option but it just wouldn't work. On my phone, it doesn't show at all. Unless LG software hides it automatically, I'd say its not there in the firmware.
This is an unlocked carrier-free Canadian model, not a Rogers phone. Rogers don't actually offer it at all.
ppczouz said:
True, Rogers support all the services, but they seem to operate on a white-listing model. If the device is not in their allow list, those features will not work.
Another example is the OnePlus phones, same thing.
But usually I see the option but it just wouldn't work. On my phone, it doesn't show at all. Unless LG software hides it automatically, I'd say its not there in the firmware.
This is an unlocked carrier-free Canadian model, not a Rogers phone. Rogers don't actually offer it at all.
Click to expand...
Click to collapse
Aaahhh.... That makes sense. I tried porting a HTC 10 from Bell to Rogers and had the same issue. They told me it was because the phone wasn't on their whitelist of allowed devices, even though I had the service working under Bell. I'd be willing to bet that the IMS Config file indicates that its to hide VoLTE and VoWi-Fi unless the network supports it. You can try using *#546368#*850# and see if it gives you options for VoLTE in the hidden menus. Likely under IMS Settings.
I can vouch for the G8X on Telus. It does support VoLTE and VoWi-Fi.
When the LG G8X was released Rogers did not carry it, I don't think the carry G8 either, that's how much the LG brand fell, it's only fanboys or people like who gave LG another chance to do better but as you can see they are not doing better, just going on the expectation if they build it suckers will buy it.

Unlocked AT&T Model on T-Mobile get VoLTE?

I tried the unlocked Sprint one and no VoLTE and no VoWifi. Does anyone have the unlocked ATT version LM-G850U on TMobile and if so, do VoLTE and VoWifi work?
Got one today.
No go. No VoLTE, no VoWifi.
I have a sprint version .someone find tricks to unlock
This VoLTE method probably does not work for Sprint version, but maybe someone can try it on AT&T version?
https://www.91mobiles.com/questions/how-to-enable-volte-on-lg-g8x-thinq
acefr said:
This VoLTE method probably does not work for Sprint version, but maybe someone can try it on AT&T version?
https://www.91mobiles.com/questions/how-to-enable-volte-on-lg-g8x-thinq
Click to expand...
Click to collapse
Those switches are greyed out on mine, which is (unintentionally) the Canadian version. But I have been told it is greyed out because VoLTE/Wifi Calling aren't enabled on the carrier side. In my case Ting says that my phone has LTE Band 12 and therefore VoLTE, but that will only work on ATT. A bit confusing because (like I said) the particular rom on my phone is Canadian (LMG850UM20e), so why ATT? The explanation for that, it seems is that ATT, (Sprint), and the unlocked Canadian version have the same sub-model (of the G8X - LMG850): LMG850UM. The USA unlocked version a different sub-model (LMG850QM), the rest of the world has yet another sub-model (LMQ850EMW). See this reddit post on the different models: https://www.reddit.com/r/LGG8X/comments/hvqdy4/hey_g8x_owner_what_is_the_submodel_number_and/
As far as I know all models (LMG850......) have the same hardware, the only difference are the roms, which artificially disable certain capabilities of the phone. I am pretty sure my phone would do VoLTE just fine on Ting (or most other carriers). The thing wrong here, I think, is that the IMEI and other specific identifiers of the phone artificially show that the phone does not have the functionality.
With all that said, I am still trying to find my around this problem. I'm considering flashing a different rom, tho not sure if that'll change what the IMEI and the other specific identifiers tell the cell carrier about compatibility. There is one report of T-Mobile supposedly fixing the same problem for a customer, see u/Veshtarii's comments on this reddit post: https://www.reddit.com/r/LGG8X/comments/irm2as/lg_g8x_unlocked_models_having_issues_with_us/
I also plan to keep updating this XDA forum post https://forum.xda-developers.com/lg-g8X/help/unable-to-enable-volte-wifi-calling-t4185809 with what I find out about this problem, potential solutions, and hopefully what solves it. Hopefully my post will be useful to those with the same problem.
I have concluded it's not possible on any TMO towers. See my forum post for more details: https://forum.xda-developers.com/lg-g8X/help/unable-to-enable-volte-wifi-calling-t4185809
Odd since t-mobile now owns Sprint. You would think t-mobile would allow or update the sprint version to use wifi/volte etc..
Perhaps future t-mobile firmware/security updates will patch the sprint to use these services.. Certainly NOT customer friendly for those who migrated from sprint to t-mobile.
I can understand the att version not working w t-mobile but not the sprint version
foxxyman said:
I have concluded it's not possible on any TMO towers. See my forum post for more details: https://forum.xda-developers.com/lg-g8X/help/unable-to-enable-volte-wifi-calling-t4185809
Click to expand...
Click to collapse
As far as I know, only the official US unlocked version LMG850QM has support for TMO VoLTE. None of other variants will work.
acefr said:
As far as I know, only the official US unlocked version LMG850QM has support for TMO VoLTE. None of other variants will work.
Click to expand...
Click to collapse
Maybe, I'm not sure still, even after all the research I've done. But I don't know everything of course. Also, after looking on ebay, the LMG850QM is like 450$ at the cheapest, compared to the 250$ of the LMG850UM ATT or Sprint versions, (the Canadian unlocked version is like 200$).
---------- Post added at 01:16 AM ---------- Previous post was at 01:12 AM ----------
wogeboy said:
Odd since t-mobile now owns Sprint. You would think t-mobile would allow or update the sprint version to use wifi/volte etc..
Perhaps future t-mobile firmware/security updates will patch the sprint to use these services.. Certainly NOT customer friendly for those who migrated from sprint to t-mobile.
I can understand the att version not working w t-mobile but not the sprint version
Click to expand...
Click to collapse
If you look in my forum post I referenced to in the previous comment of this post, I reference a reddit post where there is one person on sprint that got it working with a TMO tech person. That's the time I've heard about getting it working on T-Mobile.
This MAY HELP
I have a Sprint unlocked version, runs on T-Mobile. No wifi-calling menu.
BUT I downloaded and installed an app from Play Store called Wifi Calling written by Widget7 (get the right one), This simple app appeared to turn on the wifi-calling feature in the hidden menu. Long story short, I got wifi- calling on T-Mobile.
reachforthesky said:
This MAY HELP
I have a Sprint unlocked version, runs on T-Mobile. No wifi-calling menu.
BUT I downloaded and installed an app from Play Store called Wifi Calling written by Widget7 (get the right one), This simple app appeared to turn on the wifi-calling feature in the hidden menu. Long story short, I got wifi- calling on T-Mobile.
Click to expand...
Click to collapse
what about volte?
doctorman said:
what about volte?
Click to expand...
Click to collapse
The WiFi Calling app only reveals the hidden menu, nothing more.
T-Mobile have VoLTE on by default. You can disable it by selecting different types of mobile networks such as Automatic 3G/2G, LTE/3G, or 2G only. I have no experience on this.
I have confirmed this by dialing *#*#4636#*#* Both data and voice are over LTE. And the VoLTE on/off button is grayed out (based on the type of mobile network selected).
reachforthesky said:
The WiFi Calling app only reveals the hidden menu, nothing more.
T-Mobile have VoLTE on by default. You can disable it by selecting different types of mobile networks such as Automatic 3G/2G, LTE/3G, or 2G only. I have no experience on this.
I have confirmed this by dialing *#*#4636#*#* Both data and voice are over LTE. And the VoLTE on/off button is grayed out (based on the type of mobile network selected).
Click to expand...
Click to collapse
I mean does it matter which variety of the phone I have?
if I have a sprint model, will it work fully on tmobile with volte and wifi calling?

Question Sony Xperia 1 iv compatible with T-Mobile USA ?

Hi,
has anyone experience with this Phone in the US ?
I having a -Mobile (USA) card in it and have mostly no Cell service, and if a Cell service than only 2 G
Thanks for your feedback
looking at
Sony Xperia 1 IV - Full phone specifications
www.gsmarena.com
T-Mobile network
Learn about coverage and technologies of the T-Mobile network, including a 5G and 4G LTE Coverage map, device compatibility, and more.
www.t-mobile.com
Cheat sheet: which 4G LTE bands do AT&T, Verizon, T-Mobile and Sprint use in the USA?
What are the 4G LTE bands supported by AT&T in 2019? Do they differ from the 4G LTE bands that T-Mobile uses? And what about Verizon Wireless massive 4G LTE network and its supported frequency bands? And where is Sprint left in the 4G LTE picture? What Verizon bands are currently in use? What...
www.phonearena.com
most of the things should work
I did look on this specs first, after I got it seems like there is something additional. There is one spot I get a super connection but 90% of the time weak or no Service at all. I have tried many phones before but none of them even had such bad reception. And there supposed to be even the Tmobile 5G 71 Band. It looks to me someone sold a restricted fu.... Asia version without mentioning it
go to settings and all the way down you should see your model number. Considering that USA specific is not out yet you most likely have asian one which is XQ-CT72. EU one is CT54.
But those should work on t-mobile network, most of the bands are there. And those are low bands, so longer range.
​
It runs at limited feature support. Sony disables VoWIfi for US models and many other features including Bluetooth features such as Bluetooth meta data.
Sony blames T-Mobile for limited feature set. you will need to root your phone to hack up the build to enable VoWifi and other features.
This feud between Sony and T-Mobile has been going on for the past 10 years and Sony still playing ignorant to US market.
if you don't care about such limited feature set, Xperia 1 IV should still work on TMO
I just got my phone yesterday and realized the same thing happened to me, I didn't have service where I used to but I managed to get it working by: going to settings, then network and internet, then Sims, scroll down to access point names. And two options should pop up, I changed mine to T-mobile US LTE.. And restart, which worked for me.
hnt20 said:
It runs at limited feature support. Sony disables VoWIfi for US models and many other features including Bluetooth features such as Bluetooth meta data.
Sony blames T-Mobile for limited feature set. you will need to root your phone to hack up the build to enable VoWifi and other features.
This feud between Sony and T-Mobile has been going on for the past 10 years and Sony still playing ignorant to US market.
if you don't care about such limited feature set, Xperia 1 IV should still work on TMO
Click to expand...
Click to collapse
Are you saying the the imported version of the Xperia 1 iv does support VoWifi or neither one will on any USA carrier
kuau said:
Are you saying the the imported version of the Xperia 1 iv does support VoWifi or neither one will on any USA carrier
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that is correct, the issue is more related to Sony software rather than just the region. the only way to get VoWifi is to root your phone and disable sony software limitations
hnt20 said:
that is correct, the issue is more related to Sony software rather than just the region. the only way to get VoWifi is to root your phone and disable sony software limitations
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Is there a guide for this? Not having wifi calling is the main thing holding me back from pre-ordering
Kylewolf said:
Is there a guide for this? Not having wifi calling is the main thing holding me back from pre-ordering
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yeah this guide should work, its for the Xperia 1 III, I would think it would work for the IV, I just switched to goggleFI to get Wifi calling with out having to do anything.
Getting VoLTE and VoWiFi on unlisted carriers by flashing mbn file
I live in Canada and I have a BC72 (Asian version). I am struggling to get VoLTE and VoWiFi working. I know that mbn file is the key to getting IMS support and sony seems to block some carrier mbn files (only mbn in sales areas are available). So...
forum.xda-developers.com
I have been using the XQ-CT72 here in michigan on GoogleFi, which is basically t-mobile, in my town where I live, I get 5G without doing anything to the phone, but with that said, I work 20 miles out in rural area and apparently from my research tmobile use band 71 for 5G in rural areas, I can get LTE+ but no 5g at work, my Pixel 6 pro can get 5g but its like 1 to 2 bars that`s it, but with my sony I get full bars of better signal on LTE+ with my Sony, since the Sony is missing the n71 band for 5G, but I`m fine with what I get, since at work I` m on wifi anyways, I`m happy with my purchase, I originally had the US model on pre-order and the release date was pushed back to Sept. 22-23, so I cancelled my pre-order and bought a new one on ebay for 1069.00 compared to sony wanted 1599.00 for US mode
EDIT: I ended up send it back to seller, the 5g icon was not really 5g, if you're in the USA I would wait and buy the USA version, which I pre-ordered from Sony website, expected ship date is 22-23
moving to GoogleFI is the best option to use this phone in the USA. it will utilize Tmobile USA and have all feature enables.
Can anyone comment on Verizon compatibility with this device?
If really like to save some money and not buy the bootloader locked na version (if locked is still a thing)
Thanks
svntsvn said:
Can anyone comment on Verizon compatibility with this device?
If really like to save some money and not buy the bootloader locked na version (if locked is still a thing)
Thanks
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Only way to know for sure it to just buy it and try it for your usecases. Just buy it somewhere with a good return policy. I bought mine on Ebay with a 30-day return policy and so far it works fine on AT&T. Just make sure you do the trick where you disable dual-sim. (Google the details, it's somewhere here on XDA or on Reddit).
I bought my USA variant phone a week ago, and everything on T-Mobile works with the exception of Wi-Fi calling. The only alternative we have is to stop using T-Mobile and switch over to Google fi which does support Wi-Fi calling. Other than that my phone is flying super smooth and with fast performance like I've never believed compared to my old LG v30 Plus. I'm definitely impressed with this phone.
svntsvn said:
Can anyone comment on Verizon compatibility with this device?
If really like to save some money and not buy the bootloader locked na version (if locked is still a thing)
Thanks
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I'm using mine (XQ-CT62) in the Verizon network. Reception is not the best in the area where I'm but it works with no problem
Is that a coverage thing most likely, or the device itself? Rural area?
svntsvn said:
Is that a coverage thing most likely, or the device itself? Rural area?
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From a technical point of view, the phone should work on all carriers in the USA without issues, (with the exception of the Sony/T-Mobile Wi-Fi Calling issue that forces those who want Wi-Fi calling to switch to Google Fi, Mint Mobile, and other MVNOs).
Whatever service is in the area should work. Verizon will provision your phone to work with it's network. CDMA based carriers are supported per Sony's phone settings, so I would just go for it.

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