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T-mobile to work on ATT

Hi,
I spent last night getting my t-mobile galaxy s4 to work on ATT. I did a lot of research on the subject and it wasn't that difficult at all. I bought the phone off of EBAY.
I was able to accomplish this from all of the tools here and a little research. http://forum.xda-developers.com/showthread.php?t=2335109
The first thing i did was root the phone and install CWM. I then used the sim unlock found in the link above. The next step i took (because i like custom roms on my phone) was to install TASK650's AOKP rom. I flashed the rom and followed his instructions.
After the restart, I went through the welcome screen and shut the phone down. I put my sim in and started the phone. I noticed i was getting the H, but no LTE. This led me to more research. The fix was easy once I found it. The APN needs to be pointed to the ATT phone option. It defaults to wap.cingular. After about 5 minutes and a reboot the LTE appeared and after the speed tests confirmed.
This is not a guide. I am just sharing my experience. If you do this please do your own research as you can do damage to your phone. There are risks involved, flash and modify your phone at your own risk.

Just wondering, why did you get a tmobile s4 to use with att? Normally the att version can be found for cheaper price
Sent from my GT-I9505

I am confused here, what is it you were trying to accomplish? running a att rom on your tmo device? Because you say you have a tmo phone.
Why go thru all that, when this rom is already setup to work on tmo with the tmo apn settings already setup for you.
[ROM] Task650 AOKP (Jellybean 4.2.2)(6.26.2013)
Do you new people just go and see a rom you like, in any forum, and do not look in your devices forum and flash it? if so, your are asking to brick your phones.

maldinimi said:
Just wondering, why did you get a tmobile s4 to use with att? Normally the att version can be found for cheaper price
Sent from my GT-I9505
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Sadly he wants the unlocked boot loader that the T-Mobile s4 has I am miserable with my locked I337 .... also the T-Mobile variant has unlocked aws bands I had to flash something in my radio to get aws bands on T-Mobile using my AT&T s4
Sent from my GT-I9505G using xda premium

If you want an unlocked bootloader, can't you just install the custom recovery?
Sent from my SGH-I337 using xda app-developers app

klamse said:
If you want an unlocked bootloader, can't you just install the custom recovery?
Sent from my SGH-I337 using xda app-developers app
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Doing so does not unlock it ..... just bypass it .. it's like wearing a police uniform but your not ...
Sent from my GT-I9505G using xda premium

[Q] After I Unlock the bootloader and root my SGS3, can I still use it normal

I just wanna root it so I can delete all the bloatware but I'm afraid my phone will not reconize the service of verizon wireless since I'm unlocking the bootloader. I just wanna know, if I unlock my bootloader, can I still place phone calls, text, and use data like if nothing ever happened

junowhoo said:
I just wanna root it so I can delete all the bloatware but I'm afraid my phone will not reconize the service of verizon wireless since I'm unlocking the bootloader. I just wanna know, if I unlock my bootloader, can I still place phone calls, text, and use data like if nothing ever happened
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I just did mine, and had a t-mobile s3 also rooted and unlocked. They still work like they did before they were unlocked / rooted
Sent from my SCH-I535 using xda app-developers app

5ft24 said:
I just did mine, and had a t-mobile s3 also rooted and unlocked. They still work like they did before they were unlocked / rooted
Sent from my SCH-I535 using xda app-developers app
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lol thank you, i'm not new to rooting or unlocking bootloaders from virgin mobile but I am new on unlocking bootloaders from verizon so thanks

Bootloaders shouldn't affect service at all. Its not like a radio or anything. Also for clarification, in order to flash anything at all the bootloader has to be unlocked. Everyone on this forum has unlocked at some point.
Sent from my SCH-I535 using Tapatalk 4 Beta
If I've helped, please hit the thanks button

Samsung Devices on T-Mobile; QUESTION!

I've been thinking of switching to T-Mobile. If I switch and get the Galaxy Note 2 (which will come with 4.3 installed), will I be able to root and flash like normal (CWM recovery and flash aosp 4.4.2 ROMS) OR will I be limited to safestrap and 4.3 TW Roms like we are on the Verizon models? I thought Verizon was the only carrier that still locked the boot loader.
Sent from my SCH-I535 using XDA Premium 4 mobile app

galaxys3_xda said:
I've been thinking of switching to T-Mobile. If I switch and get the Galaxy Note 2 (which will come with 4.3 installed), will I be able to root and flash like normal (CWM recovery and flash aosp 4.4.2 ROMS) OR will I be limited to safestrap and 4.3 TW Roms like we are on the Verizon models? I thought Verizon was the only carrier that still locked the boot loader.
Sent from my SCH-I535 using XDA Premium 4 mobile app
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Probably best to search for your answer in the T-Mobile Note 2 forum or ask your question there:
http://forum.xda-developers.com/note-2-tmobile

galaxys3_xda said:
I've been thinking of switching to T-Mobile. If I switch and get the Galaxy Note 2 (which will come with 4.3 installed), will I be able to root and flash like normal (CWM recovery and flash aosp 4.4.2 ROMS) OR will I be limited to safestrap and 4.3 TW Roms like we are on the Verizon models? I thought Verizon was the only carrier that still locked the boot loader.
Sent from my SCH-I535 using XDA Premium 4 mobile app
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Yes, should go to Tmobile forum, but you should be in luck, since other carriers are not like stupid Verizon, you should able to unlock and flash custom rom http://forum.xda-developers.com/showthread.php?t=2634341

Last Unlocked Bootloader?

I'm searching for a Verizon GS3 with an unlocked bootloader. Are all 4.1.2 versions unlocked? What baseband version am I looking for?
Sent from my SCH-I545 using Tapatalk 2

Technically all phones from the factory would be locked. But everything below android version 4.3 can be unlocked. So your options are:
1. A locked phone on a version of android less than 4.3.
2. A device that had beenpreviously unlocked and upgraded to 4.3 with a custom ROM.
4.4 is currently completely locked down.

So basically, if I can find one with 4.1.2, I can upgrade with the MOAR rom to 4.3, and still keep unlocked bootloader? It is based on ml1. I loved that rom with Sprint, and want it again
Sent from my SCH-I545 using Tapatalk 2

burghfan3 said:
So basically, if I can find one with 4.1.2, I can upgrade with the MOAR rom to 4.3, and still keep unlocked bootloader? It is based on ml1. I loved that rom with Sprint, and want it again
Sent from my SCH-I545 using Tapatalk 2
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If your bootloader currently unlocked, you could flash any custom rom and you should be fine, just don't ever flash stock 4.3 or 4.4. They will locked you down ....forever..

Sweet. I have a guy checking his other stores for a 4.1.2. He thinks he has a few. I'm gonna trade my GS4 with kitkat straight up. That's how bad I want MOAR. I've been flashing roms with Sprint for over 4 years. This locked bootloader is a new beast to me

burghfan3 said:
Sweet. I have a guy checking his other stores for a 4.1.2. He thinks he has a few. I'm gonna trade my GS4 with kitkat straight up. That's how bad I want MOAR. I've been flashing roms with Sprint for over 4 years. This locked bootloader is a new beast to me
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Or you could use third party service to unlock(roll back to 4.1.2) for $50.

found downgrade service 24.95 + free shipping

astonmartin214 said:
found downgrade service 24.95 + free shipping
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Who provides the service and how do they do it?
Sent from my Unlocked SCH-I535 running whatever rom I've chosen for the day.

poppers162 said:
Who provides the service and how do they do it?
Sent from my Unlocked SCH-I535 running whatever rom I've chosen for the day.
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found it on EBay

poppers162 said:
Who provides the service and how do they do it?
Sent from my Unlocked SCH-I535 running whatever rom I've chosen for the day.
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Click to collapse
astonmartin214 said:
found it on EBay
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I'm sorry but eBay people come and go, I'd trust mobiletechvideos over some fly by night place on eBay.
Sent from my SCH-I535 using Xparent ICS Tapatalk 2

ShapesBlue said:
I'm sorry but eBay people come and go, I'd trust mobiletechvideos over some fly by night place on eBay.
Sent from my SCH-I535 using Xparent ICS Tapatalk 2
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aight well it's cool I feel why pay more for the same service & it's only 1 person who offers the S3 downgrade on Ebay like the Jtag a lot people on Ebay offer that but only 1 person offers the S3

astonmartin214 said:
aight well it's cool I feel why pay more for the same service & it's only 1 person who offers the S3 downgrade on Ebay like the Jtag a lot people on Ebay offer that but only 1 person offers the S3
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While I certainly agree with you the higher one seems a lot more reliable
Sent from my SCH-I535 using Xparent ICS Tapatalk 2

I contacted the guy on ebay. He downgrades the version of android, but can't unlock the bootloader. I figured the only reason to do this was to unlock it. What am I missing?

burghfan3 said:
I contacted the guy on ebay. He downgrades the version of android, but can't unlock the bootloader. I figured the only reason to do this was to unlock it. What am I missing?
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Then it's not a jtag service plain and simple
Sent from my SCH-I535 using Xparent ICS Tapatalk 2

burghfan3 said:
I contacted the guy on ebay. He downgrades the version of android, but can't unlock the bootloader. I figured the only reason to do this was to unlock it. What am I missing?
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look there's no way to unlock the bootloader on kit kat when you downgrade the s3 to 4.1.2 the bootloader becomes unlockable then you can flash ROMS & custom recovery

astonmartin214 said:
look there's no way to unlock the bootloader on kit kat when you downgrade the s3 to 4.1.2 the bootloader becomes unlockable then you can flash ROMS & custom recovery
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With the jtag service through mobiletechvideos they can revert you back to 4.1.2 and at that point you can unlock the bootloader
Sent from my SCH-I535 using Xparent ICS Tapatalk 2

I emailed them, and am waiting for a response. If phone is downgraded to 4.1.2, and bootloader becomes unlockable, wouldn't it also be unlockable if downgraded by the other place? Forgive me, I spent my life with Sprint, and didn't have to deal with this stuff. Can android version be downgraded without changing the bootloader? Or can any bootloader be unlocked running 4.1.2?

ask him/her what firmware the phone is on. That will tell you everything. ML1 is what you are looking for. That is the last firmware, we have that's compatible with unlocking.

sjpritch25 said:
ask him/her what firmware the phone is on. That will tell you everything. ML1 is what you are looking for. That is the last firmware, we have that's compatible with unlocking.
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ML1 is 4.3. That firmware is bootloader locked. You're looking for MB1 or MF1 4.1.1 or 4.1.2.

burghfan3 said:
I emailed them, and am waiting for a response. If phone is downgraded to 4.1.2, and bootloader becomes unlockable, wouldn't it also be unlockable if downgraded by the other place? Forgive me, I spent my life with Sprint, and didn't have to deal with this stuff. Can android version be downgraded without changing the bootloader? Or can any bootloader be unlocked running 4.1.2?
[/QUOTE
NO this is only for VZW S3 the other carriers you can flash on KK Verzion locked it from 4.3 & up so to flash ROMS you have to downgrade it or you'll be stuck on TouchWiz yes MobileTech does it they do it for $50 tho
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S3 Options w/ unlocked bootloadert

I need some help here, I have an unlocked bootloader S3 with CleamRom 8. It's been sitting around unused for many months. I gave my S5 to my uncle in exchange for his upgrade and ordered a Note 4. In the meantime, now I am using this S3 again. I almost don't care about root anymore, can I just flash the 4.4.2 tar and have Kit Kat? If anyone ever uses this again after me, it would be someone in my family that busted their phone. I am guessing stock kit kat is far more stable than these AOSP roms. I have been out of the S3 game for atleast a year. Any feedback would be appreciated.

fillyo said:
I need some help here, I have an unlocked bootloader S3 with CleamRom 8. It's been sitting around unused for many months. I gave my S5 to my uncle in exchange for his upgrade and ordered a Note 4. In the meantime, now I am using this S3 again. I almost don't care about root anymore, can I just flash the 4.4.2 tar and have Kit Kat? If anyone ever uses this again after me, it would be someone in my family that busted their phone. I am guessing stock kit kat is far more stable than these AOSP roms. I have been out of the S3 game for atleast a year. Any feedback would be appreciated.
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If you want to keep your bootloader unlocked, you need to flash a modified version of the stock firmware so your bootloader does not re-lock. I am using the official cyanogenmod rom and I have been for months. So far so good. No glitches or jumps or jitters.
Sent from my SCH-I535 using XDA Free mobile app

poppers162 said:
If you want to keep your bootloader unlocked, you need to flash a modified version of the stock firmware so your bootloader does not re-lock. I am using the official cyanogenmod rom and I have been for months. So far so good. No glitches or jumps or jitters.
Sent from my SCH-I535 using XDA Free mobile app
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4.3 Stock rooted, UNLOCKED boot loader, no Knox can be found here:
http://www.scottsroms.com/downloads.php?do=cat&id=72
Don't know if there's an equivalent for 4.4
Sent from my SCH-I535 using XDA Free mobile app

XdrummerXboy said:
4.3 Stock rooted, UNLOCKED boot loader, no Knox can be found here:
http://www.scottsroms.com/downloads.php?do=cat&id=72
Don't know if there's an equivalent for 4.4
Sent from my SCH-I535 using XDA Free mobile app
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Not at this point there isn't no, I don't think there ever will be one for 4.4
From my Wicked S3 on SOKP