Anyone confirm that you can unlock the ATT variant and flash it to be fully functional on all Tmobile bands?
Going to pick one up but need to be sure it will work. Thanks!!!
Consider it confirmed...plenty have done it including me. You may not be able to change the kernel, but there are custom touchwiz roms you can use. Just read read and read some more before making any changes.
Sent from my i747 on T-Mobile that's getting awesome LTE speeds.
sknobs said:
Anyone confirm that you can unlock the ATT variant and flash it to be fully functional on all Tmobile bands?
Going to pick one up but need to be sure it will work. Thanks!!!
Click to expand...
Click to collapse
if you ever updated to kit kat or newer basebands+modems, you are out of luck with Loki or installing ANY aesop custom roms or Cyanogenmod. They have towelroot but that's enough for some people, but you are stuck with laggy Touchwiz. It's worth paying extra for the Tmobile version
Related
As the title states, I just picked up a AT&T galaxy S3. I am looking to use it on T-Mobile. Coming from a galaxy S1, the unlocking procedure is a bit different. It also seems that roms are fairly brand specific, so I assume I should be looking for i747 roms. There are so many options out there, could anyone point me in the right direction to get this phone up and running? Are there any special considerations I should be taking since I am using an AT&T phone on T-Mobile?
PillboxHat said:
As the title states, I just picked up a AT&T galaxy S3. I am looking to use it on T-Mobile. Coming from a galaxy S1, the unlocking procedure is a bit different. It also seems that roms are fairly brand specific, so I assume I should be looking for i747 roms. There are so many options out there, could anyone point me in the right direction to get this phone up and running? Are there any special considerations I should be taking since I am using an AT&T phone on T-Mobile?
Click to expand...
Click to collapse
Before you do anything, if you want to unlock you phone so you can use it on another network go to this thread http://forum.xda-developers.com/showthread.php?t=2033225&highlight=sim+unlock
You will probably need to change the apn numbers to match t-mobile which is easy.... as far as roms go, you should do some searching for t-moible roms in the development thread. Also not being familiar with AT&T and T-mobile you should check to see if they use the same band and also check which modem (radio) you need... I am sure there have been lots of people that have done this arleady.... search search search at least you asked the question before you started not after you had a wreck
Thanks for the link. I did the unlock procedure, haven't tested it yet since I still need to cut down my SIM card.
I also went through and did the CF-Root procedure with ODIN. So theoretically the phone should be ready to flash a custom rom.
I was under the impression that I should be looking at i747 roms instead of the T-mobile version (i999?) since my device is originally AT&T branded. You are saying this is not the case? Basically I should look at roms in the T-Mobile section? It might not matter anyway since some popular roms run on both.
UPDATE:
I installed Stockorama V2 on the phone and it is up and running on t-mobile. It is a multi-carrier rom, but I used the AT&T options when installing. Would I have better luck installing it as T-Mobile? Basically, can I install a T999 rom/kernel on a i747?
PillboxHat said:
UPDATE:
I installed Stockorama V2 on the phone and it is up and running on t-mobile. It is a multi-carrier rom, but I used the AT&T options when installing. Would I have better luck installing it as T-Mobile? Basically, can I install a T999 rom/kernel on a i747?
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Click to collapse
yes sir, just the modem is different
Hey everyone,
I'm definitley not a noob at flashing roms / rooting / unlocking , etc....Been flashing phones like crazy the last few years (s3,note2,htc one,nexus,etc)But I have one question that I cannot find the answer anywere.. I bought a T Mobile S4 which was blacklisted on T Mobile so I am using it on AT&T wtih full LTE.. Which Roms do I flash for this thing? Do I flash TMO roms or ATT roms, or does the kernal flash just matter? If this is a stupid question, sorrry! lol. Just don't want to brick this thing.
Thanks Guys.
ZetterbergDatsyuk said:
Hey everyone,
I'm definitley not a noob at flashing roms / rooting / unlocking , etc....Been flashing phones like crazy the last few years (s3,note2,htc one,nexus,etc)But I have one question that I cannot find the answer anywere.. I bought a T Mobile S4 which was blacklisted on T Mobile so I am using it on AT&T wtih full LTE.. Which Roms do I flash for this thing? Do I flash TMO roms or ATT roms, or does the kernal flash just matter? If this is a stupid question, sorrry! lol. Just don't want to brick this thing.
Thanks Guys.
Click to expand...
Click to collapse
Not trying to sound TOO condesending, but you haven't read much of anything in these forums if you couldn't find your answer to that. All variants of the S4 can flash each other's ROMs as long as you immediately flash a kernel for your specific device. You have a T-Mobile device so you will need kernels from this section; but you are free to use ROMs for the AT&T, Sprint, i9505, etc. Just don't flash anything via Odin that's not meant for your specific device, and don't flash anything at all meant for the Exynos version (i9500).
lordcheeto03 said:
Not trying to sound TOO condesending, but you haven't read much of anything in these forums if you couldn't find your answer to that. All variants of the S4 can flash each other's ROMs as long as you immediately flash a kernel for your specific device. You have a T-Mobile device so you will need kernels from this section; but you are free to use ROMs for the AT&T, Sprint, i9505, etc. Just don't flash anything via Odin that's not meant for your specific device, and don't flash anything at all meant for the Exynos version (i9500).
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Click to collapse
Yeah I know most ROMS support all Variants but I wasn't 100% sure. I must of been searching the wrong things....I was confused with the kernal flashing as well. I have always owned a Carrier Specific device and never have used an unlocked device thus far, so I was a bit confused . Thanks for Clarifying though! :good:
Infamous S4 ROM has an Aroma installer that will support multi carriers.
Look at the change log for more details.
http://forum.xda-developers.com/showthread.php?t=2264932
How are you still using the blacklisted phone if it's blocked for tmobile? Thought the two carriers shared imeis?
sasoq said:
How are you still using the blacklisted phone if it's blocked for tmobile? Thought the two carriers shared imeis?
Click to expand...
Click to collapse
I was going to say the same thing. If you're blacklisted on T-Mobile, you'll be blacklisted on AT&T. I have a blacklisted T-Mobile and any sim (even international) is blacklisted while in the US. However, in other countries, it works fine.
Hi,
I have SIM unlocked, rooted Tmobile's samsung Galaxy SIII (SGH-T999); put AT&T SIM card and it is working fine. As a fundamental question on loading custom ROMs, should I be picking ROMs from AT&T forum in XDA or Tmobile in XDA??? So far I have been using Avatar/Liquid Smooth ROM built for Tmobile....still it doesnt make sense to me as i am currently on AT&T....I dont want to brick my phone by doing something wrong.
Can someone reply?
Thanks
Mahesh
BTW - ignore my signature....i am unable to edit them - dont know why - there is no option to edit signature!
kmahesh said:
Hi,
I have SIM unlocked, rooted Tmobile's samsung Galaxy SIII (SGH-T999); put AT&T SIM card and it is working fine. As a fundamental question on loading custom ROMs, should I be picking ROMs from AT&T forum in XDA or Tmobile in XDA??? So far I have been using Avatar/Liquid Smooth ROM built for Tmobile....still it doesnt make sense to me as i am currently on AT&T....I dont want to brick my phone by doing something wrong.
Can someone reply?
Thanks
Mahesh
BTW - ignore my signature....i am unable to edit them - dont know why - there is no option to edit signature!
Click to expand...
Click to collapse
You should flash rom's specific to your phones hardware/model number. It seems to me *most* of the hardware is the same between the i747 and t999 from what i've read but always best to err on the side of caution.
dntesinfrno said:
You should flash rom's specific to your phones hardware/model number. It seems to me *most* of the hardware is the same between the i747 and t999 from what i've read but always best to err on the side of caution.
Click to expand...
Click to collapse
by doing that, in my case, would my ROM be optimized for AT&T??
kmahesh said:
by doing that, in my case, would my ROM be optimized for AT&T??
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Click to collapse
Most likely, but tread with caution. The only issue you might encounter are APN settings that you could always edit manually. From what I understand, the T-Mobile Galaxy S3 is almost identical to the AT&T one, and in certain cases, some people have been able to run T-Mobile roms on the AT&T one.
kmahesh said:
by doing that, in my case, would my ROM be optimized for AT&T??
Click to expand...
Click to collapse
The only thing that is carrier specific as far as custom ROM's are concerned is the ability to connect to the network in question, its the hardware the ROM is designed for that is important, minus any carrier bloat apps that may be included in a ROM (non issue if using an AOSP based ROM). Flashing software to an unintended device will most likely be bad news. As drx said worst case you would have to manually enter the apn settings. If i recall the only real difference in the TMo and ATT S3's is the fact that the T999 can connect to the 1700mhz band and the i737 can't (natively).
Is it possible?
What I'm trying to do is to achieve the wifi calling feature in att s4
Sent from my SGH-M919
re: wifi calling AT&T phone
-greenboy- said:
Is it possible?
What I'm trying to do is to achieve the wifi calling feature in att s4
Sent from my SGH-M919
Click to expand...
Click to collapse
There are three prerequisites for getting wifi calling to work using an AT&T phone.
#1: Unlocked Phone
#2: Tmobile Sim card
#3: Flash a Tmobile 4.2 or 4.3 Jellybean M919 Touchwiz based custom or stock rom.
Once you have met those three requirements your AT&T phone will have wifi calling.
Good luck!
Misterjunky said:
There are three prerequisites for getting wifi calling to work using an AT&T phone.
#1: Unlocked Phone
#2: Tmobile Sim card
#3: Flash a Tmobile 4.2 or 4.3 Jellybean M919 Touchwiz based custom or stock rom.
Once you have met those three requirements your AT&T phone will have wifi calling.
Good luck!
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Click to collapse
Just wanted to add, use the kernel and modems that are meant for AT&T even though you are running a TMobile rom.
re: modem/radio
braschlosan said:
Just wanted to add, use the kernel and modems that are meant for AT&T even though you are running a TMobile rom.
Click to expand...
Click to collapse
No need to change modems, none of the cwm/twrp flashable zip file roms contains modems and
he needs to use whatever modem he already has, flashing a tmobile modem will most likely cause
signal loss since it's related to hardware and the AWS frequencies on the AT&T phone.
Get it to work?
-greenboy- said:
Is it possible?
What I'm trying to do is to achieve the wifi calling feature in att s4
Sent from my SGH-M919
Click to expand...
Click to collapse
I have an AT&T S4 myself on T-mobile now and I cannot find a combo that works. I cannot install a recovery on mine without Safestrap and while I can flash rom's with this method, I have yet to find a combo of roms and kernels where everything works. I either get a rom that will not boot at all or a I get one that will boot but no wifi whatsoever (cannot turn on Wifi). I've tried Safestrap 3.65 and 3.71 and a dozen or so roms and kernels and still no combo that works. What I can say is that 4.2 based roms at least boot.
I have a unlocked at&t s3 i747 and use it on tmobile service. I wanted to know of there are any good roms that are based on touchwiz and could you please send a link for me. Also will the roms work for tmobile ?
[email protected] said:
I have a unlocked at&t s3 i747 and use it on tmobile service. I wanted to know of there are any good roms that are based on touchwiz and could you please send a link for me. Also will the roms work for tmobile ?
Click to expand...
Click to collapse
The ROMs will work with T-Mobile, but you will probably have to manually load the T-Mo APN settings.
Which bootloader and modem are you on? If you want TW you will not have LP roms as an option, not a problem for me but others always want the latest and greatest. TW KitKat ROMs require at least the NE4 bootloader, unless you are using one of two custom kernels with the MJB bootloader.