Develop Bugs

[Q] AT&T ROMs on T-Mobile

So I'm going to buy a T-Mobile Galaxy S4 tomorrow. I'm locked onto AT&T for a few more months (so I'll unlock this new one and buy it out right). When done I'm going T-Mobile (or Straight Talk).
Either way, there's a ROM developer over there who's ROM I really like that he's developing for the AT&T S4 (ShoStock) and I'd like to know since it's essentially similar hardware should it be a simple flash over?
I'm coming from an AT&T S2 and I know it was simple "hellraising" the International ROMs and they'd work on the AT&T variant. Can we do the same with the S4 (since they are essentially similar hardware minus additional radios on the T-Mobile variant).
Thanks!!! :laugh::good:

re: AT&T rom on Tmobile
Nosferatu. said:
So I'm going to buy a T-Mobile Galaxy S4 tomorrow. I'm locked onto AT&T for a few more months (so I'll unlock this new one and buy it out right). When done I'm going T-Mobile (or Straight Talk).
Either way, there's a ROM developer over there who's ROM I really like that he's developing for the AT&T S4 (ShoStock) and I'd like to know since it's essentially similar hardware should it be a simple flash over?
I'm coming from an AT&T S2 and I know it was simple "hellraising" the International ROMs and they'd work on the AT&T variant. Can we do the same with the S4 (since they are essentially similar hardware minus additional radios on the T-Mobile variant).
Thanks!!! :laugh::good:
Click to expand...
Click to collapse
As soon as you get your Tmobile Galaxy S4 Unlocked you will be able to flash the AT&T ShoStock rom without any problems.
It will not need hellraiser or anything else and it can be flashed just like any other custom rom using CWM or TWRP recovery..
The only thing you will loose by flashing any AT&T rom on an Unlocked Tmobile phone is the free wifi calling feature.
All the Tmobile Galaxy S4 custom roms have the wifi calling feature in them.
If you flash any of the AT&T custom Galaxy S4 roms none of them will have the wifi calling feature.

Misterjunky said:
As soon as you get your Tmobile Galaxy S4 Unlocked you will be able to flash the AT&T ShoStock rom without any problems.
It will not need hellraiser or anything else and it can be flashed just like any other custom rom using CWM or TWRP recovery..
The only thing you will loose by flashing any AT&T rom on an Unlocked Tmobile phone is the free wifi calling feature.
Click to expand...
Click to collapse
Gotcha. What's the free Wifi calling feature? I won't be a T-Mobile customer for a few months and still on AT&T's network so I don't think I'd benefit from it.

Nosferatu. said:
So I'm going to buy a T-Mobile Galaxy S4 tomorrow. I'm locked onto AT&T for a few more months (so I'll unlock this new one and buy it out right). When done I'm going T-Mobile (or Straight Talk).
Either way, there's a ROM developer over there who's ROM I really like that he's developing for the AT&T S4 (ShoStock) and I'd like to know since it's essentially similar hardware should it be a simple flash over?
I'm coming from an AT&T S2 and I know it was simple "hellraising" the International ROMs and they'd work on the AT&T variant. Can we do the same with the S4 (since they are essentially similar hardware minus additional radios on the T-Mobile variant).
Thanks!!! :laugh::good:
Click to expand...
Click to collapse
I've been flashing AT&T AOSP based roms on it... I've been flashing AT&T sense roms on my T-mobile HTC One.. I haven't flashed AT&T TW ROMs on my Tmobile galaxy s4, but as I mentioned, I've been flashing AT&T AOSP based roms on my tmobile galaxy s4 with no issues at all.
I have ALSO been flashing TW i9505 ROMs with no issues at all. (which is probably more applicable to your question)
I'm on AT&T but have these tmobile devices for complicated reasons.
Best results i've had with my HTC is flashing international roms and selecting T-Mobile as my device type in AROMA, then once in the ROM, i just fix the APN to "ATT Phone" for full LTE speed, etc.
Same goes for i9505 TW ROMs on the GS4. The reason I bring this up is that I could never get WiFi hotspot (internet connection sharing) to work on either t-mobile phone when choosing AT&T as my carrier in AROMA (well that's not entirely true, it seems radio-related. older roms were fine, but then with a recent base-change, I encountered this issue with hotspot). I found by choosing T-MOBILE in AROMA, and then disabling wifi calling when in-ROM (to avoid the nags about invalid SIM type) and changing APN to ATT Phone, I have everything working perfectly.
I hope this helps you.

This is the WiFi calling feature:
http://t-mobile-coverage.t-mobile.com/4g-wireless-broadband-service
Sent from my SGH-M919 using xda app-developers app

re: wifi calling
Nosferatu. said:
Gotcha. What's the free Wifi calling feature? I won't be a T-Mobile customer for a few months and still on AT&T's network so I don't think I'd benefit from it.
Click to expand...
Click to collapse
If you have any tmobile plan you have a certain amount of anytime minutes, with free wifi calling whever you use it, it does not
subrract from those anytime minutes. I am usually home which means that 90% of the time that I use my phone I use wifi calling
and it does not reduce the number of minutes I have on my plan.
Wifi calling is really great, even if you leave it on all the time the phone switches automatically to normal cellular mode if it looses
the wifi connection.
Then when a wifi is connection is within reach, it starts using that again automatically which makes it really easy to use.
So for all practical terms, I leave my wifi calling on all the time. If I drive away from home the regular GSM/3G/4G etc. turns on.
Best of all the quality of the incoming and outgoing call audio is exactly the same using wifi or using the cellular network.
---------- Post added at 09:30 PM ---------- Previous post was at 08:49 PM ----------
sneef said:
I've been flashing AT&T AOSP based roms on it... I've been flashing AT&T sense roms on my T-mobile HTC One.. I haven't flashed AT&T TW ROMs on my Tmobile galaxy s4, but as I mentioned, I've been flashing AT&T AOSP based roms on my tmobile galaxy s4 with no issues at all.
I have ALSO been flashing TW i9505 ROMs with no issues at all. (which is probably more applicable to your question)
I'm on AT&T but have these tmobile devices for complicated reasons.
Best results i've had with my HTC is flashing international roms and selecting T-Mobile as my device type in AROMA, then once in the ROM, i just fix the APN to "ATT Phone" for full LTE speed, etc.
Same goes for i9505 TW ROMs on the GS4. The reason I bring this up is that I could never get WiFi hotspot (internet connection sharing) to work on either t-mobile phone when choosing AT&T as my carrier in AROMA (well that's not entirely true, it seems radio-related. older roms were fine, but then with a recent base-change, I encountered this issue with hotspot). I found by choosing T-MOBILE in AROMA, and then disabling wifi calling when in-ROM (to avoid the nags about invalid SIM type) and changing APN to ATT Phone, I have everything working perfectly.
I hope this helps you.
Click to expand...
Click to collapse
LTE is now available for both AT&T and Tmobile LTE capable phones. Even an unlocked Tmobile S3 can now get LTE data
in a lot of the larger cities.
One of my friends has an unlocked AT&T S3 phone and he is on the Tmobile network so he always flashes tmobile custom
roms, when he flashed a tmobile rom which came with the aroma installer he selects "Tmobile" since he is a tmobile customer.
If he would select AT&T in the aroma installer he would not get LTE data or 4G unless he changes his APN to tmobile's APN.
In fact, next time you flash a Tmobile rom without the aroma installer to an unlocked AT&T phone with an Tmobile sim card
you will see that it will automatically display the proper Tmobile APN after flashing without the need to change it.
Same thing holds true if you have a unlocked Tmobile phone and a AT&T sim card and flash a AT&T rom without the
aroma installer when it gets done flashing and reboots the phone when you check the APN it will have the AT&T APN
displayed automatically too.
Before I got my Tmobile S4 I had a AT&T Unlocked S3 I747 phone and when I switched to the Tmobile network and put
the Tmobile sim card in the phone while I still had a AT&T custom rom flashed in the phone everything worked fine and
when I checked the APN it displayed "T-Mobile US" without the need to change the apn.
So from then on, when I flashed any custom tmobile rom with the aroma installer and selected "Tmobile"
and the phone always had the correct APN in it after flashing without the need to manually change it.
When I flashed a tmobile custom rom without aroma installer after flashing it also displayed the proper tmobile apn.

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Gsm for states

Just curious if anyone still checks in on here, so I would like to hear from successful users who use this device on att. My brothers phone is crapping out on him and doesn't have the money to get a new device. I know my inc2 is unlocked bc I used it while I was in Qatar but don't remember what rom I was running to use Gsm. I would like to use an AOSP rom vs sense but I will use whatever works. I read that skyraider is a good one. Thanks for any info and possibly include the APN settings I would need for att. Thanks.
Sent from my SCH-I545 using XDA Premium 4 mobile app

xM Minton Mx said:
Just curious if anyone still checks in on here, so I would like to hear from successful users who use this device on att. My brothers phone is crapping out on him and doesn't have the money to get a new device. I know my inc2 is unlocked bc I used it while I was in Qatar but don't remember what rom I was running to use Gsm. I would like to use an AOSP rom vs sense but I will use whatever works. I read that skyraider is a good one. Thanks for any info and possibly include the APN settings I would need for att. Thanks.
Click to expand...
Click to collapse
I still check in here once in a while & this is from personal experience - we have 2 unlocked DI2 and use the GSM bands at home for backup & abroad for travel. Flashed DW's device with Sky Raider since Dec. 2011 and has been using it continuously and the ROM is solid for both CDMA and GSM usage. I go back & forth between TSM Sense 5.x and SR, apps will update to the latest as released via the (Google) Store - and if you need more internal Apps storage space, move them to the mSD card or you will run out of memory space. I recommend using a 16MB mSD card (which came pre-installed with earliest DI2 in the box from VZW)
VZW's stock ROM (AndyBone's stock rom, deodexed - as I recall) will work just fine with its bloatware removed/frozen but TSM or SR are much more responsive & smooth, and seldom crash or lock up. All 3 variants can switch back & forth between CDMA and GSM as needed, depending on your brother's "home location" on where to use this phone.
WiFi is great on this phone - if you are using this on postpaid AT&T (or T-Mobile) - you will need to be on a (shared) data plan and firmware restrictions in the Rom will limit you to 2.5G or Edge speed, as 3G speed is not available The only time that you will get 3G speed in the U.S. is if you are using a "foreign" (prepaid) Sim and that it roam on AT&T and can access 3G bands on the device. Data speed on T-Mobile is slow depending on tower locations & band(s) used - your own results do & might varied.
The APN settings are the common, universal ones for all Windows/Android devices so it's fairly easy to setup - just google for it. There is a hidden menu to access to edit the MMS & browser settings on the device, and remember to save it before exiting.
If your brother is going to use it on AT&T, make sure he can try & test out the (standard-sized Sim) device before committing to a data plan and/or long term contract, unless he is going on a prepaid GSM plan (StraightTalk or Simpe Mobile, etc.) - also, I believe this phone can be used on PagePlus Cellular, a MNVO provider using VZW's CDMA network.
If you have difficulties downloading AB's stock or TSM rom, please send me a PM and I will give you a private link to download it. SR's rom should be readily available.
Good luck !

Letitride said:
I still check in here once in a while & this is from personal experience - we have 2 unlocked DI2 and use the GSM bands at home for backup & abroad for travel. Flashed DW's device with Sky Raider since Dec. 2011 and has been using it continuously and the ROM is solid for both CDMA and GSM usage. I go back & forth between TSM Sense 5.x and SR, apps will update to the latest as released via the (Google) Store - and if you need more internal Apps storage space, move them to the mSD card or you will run out of memory space. I recommend using a 16MB mSD card (which came pre-installed with earliest DI2 in the box from VZW)
VZW's stock ROM (AndyBone's stock rom, deodexed - as I recall) will work just fine with its bloatware removed/frozen but TSM or SR are much more responsive & smooth, and seldom crash or lock up. All 3 variants can switch back & forth between CDMA and GSM as needed, depending on your brother's "home location" on where to use this phone.
WiFi is great on this phone - if you are using this on postpaid AT&T (or T-Mobile) - you will need to be on a (shared) data plan and firmware restrictions in the Rom will limit you to 2.5G or Edge speed, as 3G speed is not available The only time that you will get 3G speed in the U.S. is if you are using a "foreign" (prepaid) Sim and that it roam on AT&T and can access 3G bands on the device. Data speed on T-Mobile is slow depending on tower locations & band(s) used - your own results do & might varied.
The APN settings are the common, universal ones for all Windows/Android devices so it's fairly easy to setup - just google for it. There is a hidden menu to access to edit the MMS & browser settings on the device, and remember to save it before exiting.
If your brother is going to use it on AT&T, make sure he can try & test out the (standard-sized Sim) device before committing to a data plan and/or long term contract, unless he is going on a prepaid GSM plan (StraightTalk or Simpe Mobile, etc.) - also, I believe this phone can be used on PagePlus Cellular, a MNVO provider using VZW's CDMA network.
If you have difficulties downloading AB's stock or TSM rom, please send me a PM and I will give you a private link to download it. SR's rom should be readily available.
Good luck !
Click to expand...
Click to collapse
Awesome thank you. Not too worried about 3g, he will have wifi in the dorm and most of the campus I'm sure. He's currently on my aunt's plan so data and all that is already on it. So you recommend skyraider tho? Which do you prefer to be better responsive, sr or sense 5?
Sent from my XT1080 using XDA Premium 4 mobile app

Both wife n I using SR currently n most of the newest Android 4.x apps update installed easily on their own. It is more responsive and its easy switch back n forth in adverse conditions are what I depend the Rom for.
Do a full stock backup, full wipe n install SR to run it for real life use, make a full backup then full wipe, install TSM to run for comparison. Make. Backup then stick with 1 of 2 with the other as reserve. I think you will agree w SR as better choice but draw your own user conclusion.

[Q] TMO GS4 Network Modes on AT&T Network

So I recently got a T-Mobile GS4 for use on AT&T. I have set up the APNs, etc. and everything seems to be working, except for one annoying thing:
The device seems to be reverting it's Network Mode to WCDMA preferred instead of LTE/GSM Auto. I have tried setting this in Settings as well as in the Testing mode menu and it will not stick.
This happens every time the phone is booted, as well as when a call is made. When the phone is booted, it takes a long time to connect to the network, and when it finally does it is set to WCDMA preferred. I can then change it manually to be LTE/GSM auto.
When I make a call, the network drops from LTE to H/H+ as expected. However, after the call is completed, the network connection drops entirely and reconnects a short time thereafter but on WCDMA preferred.
Has anyone else experienced this issue, or have any ideas? If it makes any difference, I am running the latest CM10.2 for jfltetmo, without any other modifications.
Thanks in advance!
EDIT: I should add that the IMEI on file with AT&T is indeed for an AT&T LTE phone.

re: LTE/GSM
flinttownbrown said:
So I recently got a T-Mobile GS4 for use on AT&T. I have set up the APNs, etc. and everything seems to be working, except for one annoying thing:
The device seems to be reverting it's Network Mode to WCDMA preferred instead of LTE/GSM Auto. I have tried setting this in Settings as well as in the Testing mode menu and it will not stick.
This happens every time the phone is booted, as well as when a call is made. When the phone is booted, it takes a long time to connect to the network, and when it finally does it is set to WCDMA preferred. I can then change it manually to be LTE/GSM auto.
When I make a call, the network drops from LTE to H/H+ as expected. However, after the call is completed, the network connection drops entirely and reconnects a short time thereafter but on WCDMA preferred.
Has anyone else experienced this issue, or have any ideas? If it makes any difference, I am running the latest CM10.2 for jfltetmo, without any other modifications.
Thanks in advance!
EDIT: I should add that the IMEI on file with AT&T is indeed for an AT&T LTE phone.
Click to expand...
Click to collapse
What I would do to solve this problem is to first go into recovery and make a nandroid backup.
The problem you are having is due to the fact that you are running CM10.2 rom which perhaps
is not 100% compatible with your specific phone and or carrier.
What you need to do is to flash an AT&T custom rom OR better yet flash Darthstalker's
AROMA Multi-Carrier rom and select AT&T after the rom starts flashing.
That way it will not only flash a proper AT&T rom but it will also flash the
proper kernel which you need if you want to use it on AT&T as well as
setting it up with the correct APN's which will stick.
The Darthstalker rom can be found here: http://forum.xda-developers.com/showthread.php?t=2292054
This rom has a lot of extra features, settings and options making it one of the best roms around
especially for someone like you who wants to use a tmobile phone on the AT&T network.
Give it a try, I am certain it would perform really well for you without any issues.
Good luck!

Thanks for the info. Looks like that is a TouchWiz ROM though... I'm looking for an AOSP one... Will look more
Sent from my Nexus 7 using XDA Premium HD app

Misterjunky said:
What I would do to solve this problem is to first go into recovery and make a nandroid backup.
The problem you are having is due to the fact that you are running CM10.2 rom which perhaps
is not 100% compatible with your specific phone and or carrier.
What you need to do is to flash an AT&T custom rom OR better yet flash Darthstalker's
AROMA Multi-Carrier rom and select AT&T after the rom starts flashing.
That way it will not only flash a proper AT&T rom but it will also flash the
proper kernel which you need if you want to use it on AT&T as well as
setting it up with the correct APN's which will stick.
The Darthstalker rom can be found here: http://forum.xda-developers.com/showthread.php?t=2292054
This rom has a lot of extra features, settings and options making it one of the best roms around
especially for someone like you who wants to use a tmobile phone on the AT&T network.
Give it a try, I am certain it would perform really well for you without any issues.
Good luck!
Click to expand...
Click to collapse
On second thought it would be a good idea to try this to see if the problem is eliminated. In the meantime, do you know of any AOSP ROMs that might have the same type of solution?
Sent from my SGH-M919 using XDA Premium HD app

I'm on slimbean ROM and works great plus I also have a T-Mobile S4 on at&t and never had an issue like that and you could try to flash the ATT_CSC_fixer2-1.zip
Sent from my SGH-M919 using XDA Premium 4 mobile app

I've had my T-Mobile GS4 on ATT for a few months now and have had no problem with LTE after they had my phone's IMEI, and I was using the correct APN. This is the case on many TW and AOSP ROMs that I've tried. Good luck!
Sent from my SGH-M919 using Tapatalk

same here i have an m919 rooted stock mdl rom on at&T and have no such issue mine stays on lte.. both with phone or pta ap.. Have you tried reflashing and factory reset before setting stuff up...

Thanks to everybody for the info. I finally got it working:
I first backed up to the Touchwiz ROM mentioned and made sure data was working. Here I had to manually add the APN and then the settings stuck after reboot, calls, etc.
Then, I reinstalled CM 10.2 for jfltetmo. Magically, the setting is now sticky.
Thinking about it, I got the phone, unlocked it, and immediately installed CM without attempting to use the ATT sim card at all. Perhaps TW does something to make this stick, but I have no idea.
Sent from my SGH-M919 using XDA Premium HD app

at&t 4G LTE Support

Hi,
I have an unlocked version of Fire Phone and have flashed the almost latest version of the Cyanogenmod ROM. I am using at&t wireless service but it seems that I just cannot use LTE. Based on other information I think the phone supports all the bands at&t is using. The network the phone is using is HSPA. I tried changing settings in the phone but it did not help. I searched carefully using related keywords but have not found anybody talking about this, and I wonder whether this is something too simple to ask or nobody else has ever encountered this problem. I want to know if there is something I can do to use LTE.
Thanks.

rwalle said:
Hi,
I have an unlocked version of Fire Phone and have flashed the almost latest version of the Cyanogenmod ROM. I am using at&t wireless service but it seems that I just cannot use LTE. Based on other information I think the phone supports all the bands at&t is using. The network the phone is using is HSPA. I tried changing settings in the phone but it did not help. I searched carefully using related keywords but have not found anybody talking about this, and I wonder whether this is something too simple to ask or nobody else has ever encountered this problem. I want to know if there is something I can do to use LTE.
Thanks.
Click to expand...
Click to collapse
I have seen some issues about CM based ROM's and ATT LTE. Did you have a full LTE signal and good data speeds on the stock ROM before you flashed the CyanogenMod ROM?
Sent from my Nexus 6 using XDA-Developers mobile app

fast69mopar said:
I have seen some issues about CM based ROM's and ATT LTE. Did you have a full LTE signal and good data speeds on the stock ROM before you flashed the CyanogenMod ROM?
Sent from my Nexus 6 using
Click to expand...
Click to collapse
Thank you for your reply. Unfortunately, I had already flashed CM before I switched to att so I do not have information about that. And currently I am not quite willing to flash the phone back to the native fireOS just for this because HSPA still gives good data speed...

rwalle said:
Thank you for your reply. Unfortunately, I had already flashed CM before I switched to att so I do not have information about that. And currently I am not quite willing to flash the phone back to the native fireOS just for this because HSPA still gives good data speed...
Click to expand...
Click to collapse
Have you checked your APN settings and verified that it is setup correctly to use ATT LTE? Also, was this phone ever used on ATT before with the sim card you put in it? If not, then what will have to happen is this, I think: I found this excerpt which I believe is what will have to happen.
You WILL NOT get AT&T LTE on you phone unless your account is first provisioned with an AT&T LTE Phone. There is NO WAY around this. You must buy/borrow an AT&T phone that has LTE capability, put your SIM in that phone, and let the system provision your account for LTE automatically. This is NOT something that customer service, or a store clerk, can do for you. Once your account is provisioned for LTE (you will know because the LTE indicator will show up on the phone), you can then put the SIM card into your Fire Phone. At that point, the device will automatically select the "phone" APN, and you will get LTE (identified by the "4G" indicator).
Hope this helps
Sent from my Nexus 6 using XDA-Developers mobile app

4G only (no LTE) following switch to Revolution ROM

Hello -
I just rooted my HTC One M9 and switched to Revolution 14.0 (Lollipop). I've achieved my goal of getting rid of the AT&T and HTC bloat-wear, but I've lost LTE - phone is 4G only now. I'm using the same SIM card as I was with stock ROM (and had LTE). As indicated, this is an AT&T phone, and I'm using Cricket as my MVNO.
Any ideas, including how to diagnose? I'm a noob, so please take pity and keep it simple!
Thanks in advance

Craig from Cambridge said:
Hello -
I just rooted my HTC One M9 and switched to Revolution 14.0 (Lollipop). I've achieved my goal of getting rid of the AT&T and HTC bloat-wear, but I've lost LTE - phone is 4G only now. I'm using the same SIM card as I was with stock ROM (and had LTE). As indicated, this is an AT&T phone, and I'm using Cricket as my MVNO.
Any ideas, including how to diagnose? I'm a noob, so please take pity and keep it simple!
Thanks in advance
Click to expand...
Click to collapse
Is revolution 14.0 an international variant build by chance ?
If so.....the 4G moniker is representative of European builds on many occasions.
If the build is US rom based, you should Check and adjust your APN settings.
Many builds do not use the LTE signal moniker, and many do need APN checks for proper network connection, as they are built for several different carriers.
Check out those few items, and you will find your answer.
It is also a good idea to check the rom thread, as I'm sure several other users have seen the same issues you are having.
Happy flashing...g

I think I got it ...
Thanks for the ideas ....
I think this is a nomenclature issue and not an actual network issue. My upload / download speeds on '4G' are about 8 mbps, which is what I would expect for 'LTE', so I'm going to say that this flavor of ROM is just calling it a different name. Problem solved!
gregsarg said:
Is revolution 14.0 an international variant build by chance ?
If so.....the 4G moniker is representative of European builds on many occasions.
If the build is US rom based, you should Check and adjust your APN settings.
Many builds do not use the LTE signal moniker, and many do need APN checks for proper network connection, as they are built for several different carriers.
Check out those few items, and you will find your answer.
It is also a good idea to check the rom thread, as I'm sure several other users have seen the same issues you are having.
Happy flashing...g
Click to expand...
Click to collapse