So I am new to GSM phones anyway but I just got an AT&T GSIII and I am using it on T-Mobile. I am a Sprint user initially (rooted Gnexus) and testing T-Mobile in an area I frequent to compare if it is worth switching.
My questions is I am already downloading the root kit and ready to run a ROM but should I use a T-Mobile Rom or an AT&T Rom. Also not sure if I should be asking this in the AT&T general section. Any advice would be great.
Any help is greatly appreciated. Thank you in advance!
The T-Mobile Roms for the GSIII should work on AT&T. That's what i heard. And the kernels too btw.
re: flashing roms
latinmaxima said:
So I am new to GSM phones anyway but I just got an AT&T GSIII and I am using it on T-Mobile. I am a Sprint user initially (rooted Gnexus) and testing T-Mobile in an area I frequent to compare if it is worth switching.
My questions is I am already downloading the root kit and ready to run a ROM but should I use a T-Mobile Rom or an AT&T Rom. Also not sure if I should be asking this in the AT&T general section. Any advice would be great.
Any help is greatly appreciated. Thank you in advance!
Click to expand...
Click to collapse
If you are on the tmobile network, flash tmobile roms, if you are on the at&t network flash AT&T roms for best results.
Just be sure that if your phone is an AT&T I747 Galaxy S3 even if it's unlocked only flash AT&T modems/radios and
if your phone is an T999 Tmobile S3 never flash a AT&T modem/radio but only flash T999 Tmobile modem/radios.
Misterjunky said:
If you are on the tmobile network, flash tmobile roms, if you are on the at&t network flash AT&T roms for best results.
Just be sure that if your phone is an AT&T I747 Galaxy S3 even if it's unlocked only flash AT&T modems/radios and
if your phone is an T999 Tmobile S3 never flash a AT&T modem/radio but only flash T999 Tmobile modem/radios.
Click to expand...
Click to collapse
So I am safe to flash any t-mobile rom as long as I avoid the radios? What is this multi carrier stuff I have read? Sorry still reading the forums before really leaping into the root and flashing.
I would really like to go PA and TWRP as that is what I am most familiar with.
Thanks for the responses.
re: flashing
latinmaxima said:
So I am safe to flash any t-mobile rom as long as I avoid the radios? What is this multi carrier stuff I have read? Sorry still reading the forums before really leaping into the root and flashing.
I would really like to go PA and TWRP as that is what I am most familiar with.
Thanks for the responses.
Click to expand...
Click to collapse
Multi-Carrier will flash either of the phones, AT&T I747 or Tmobile T999, the rom installer will automatically
detect which phone you have and flash the proper rom. These multi-carrier roms are all custom roms which
require your phone to be rooted and have TWRP/CWM recovery installed.
As long as you never use Odin for flashing and always use CWM or TWRP when you flash roms you will never
have to worry about flashing /radios modems, or flashing the wrong one.
All the custom roms found here in XDA do not come with the modem/radio images but instead they use the
modem/radio image which is already in your phone.
If you want to flash any custom roms you will have to root the phone and install twrp or cwm recovery first.
Without doing that you can only flash stock roms which require the Odin windows software.
Good luck!
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My dad just bought a AT&T GS3 from a friend and I just finished unlocking it so he can use his T-Mobile service. We've confirmed his voice calling is working. I want to root this phone so I can flash a stock ROM that removes all the AT&T stuff. What's the proper way to root the unlocked phone now? Thanks in advance for any guidance you can provide.
PS. Any work around to get 3G vs Edge?
Look in the dev section EVERYTHING you need is in there. This question on how to root is asked so much its not even funny anymore. Oh wait I just seen your paps is on tmobile, if you want a stock rom for that you need to go to their section
Sent from my SGH-I747M using xda premium
the phone should stay unlocked through rooting and a custom rom. mine is unlocked, rooted, with aokp on it and it still can use other carrier's sim cards with no problem. about the 1700 band, there is currently no way to use it with this phone. there is a bounty thread in the general section about it.
edit: do you want a stock tmobile rom or a vanilla android rom?
sent from my I747
Thanks for the replies. I guess where I'm confused is what root method do I use? ATT since it's ATT hardware, or Tmobile since it's now unlocked and connected to TMobile? Sorry for my lack of knowledge on this.
Zameus said:
Thanks for the replies. I guess where I'm confused is what root method do I use? ATT since it's ATT hardware, or Tmobile since it's now unlocked and connected to TMobile? Sorry for my lack of knowledge on this.
Click to expand...
Click to collapse
use the att method because it's att hardware.
sent from my I747
Hi there!
I have a Galaxy S3 SGH T999 version. It has Tmobile rom, but I am trying to install windmobile stock rom via odin (3.07 - tried other older versions) and it fails the secure check.
Is there way to resolve this? I really want to install the stock windmoile rom , and did lot of searching and couldn't really find a lot of info, except that someone with AT&T galaxy S3 had same issue when installing Rogers rom.
I would really appreciate it, thank you!
re: odin flash
LimitsX said:
Hi there!
I have a Galaxy S3 SGH T999 version. It has Tmobile rom, but I am trying to install windmobile stock rom via odin (3.07 - tried other older versions) and it fails the secure check.
Is there way to resolve this? I really want to install the stock windmoile rom , and did lot of searching and couldn't really find a lot of info, except that someone with AT&T galaxy S3 had same issue when installing Rogers rom.
I would really appreciate it, thank you!
Click to expand...
Click to collapse
If you continue trying to ODIN flash firmware which is not intended for your specific phone
you will end up with a nice shiny brick sooner or later, in your case it will be sooner.
If you want the appearance of a windows phone, the best way to do it is to find themes and
launchers which make the phone look like a winmobile phone.
There are a lot of themes and launchers at the play store which do exactly what you are looking for.
Check it out B4 it's too late..
It's not a windows phone style, I think you misunderstood me.
I just don't like T-mobile rom and its bloatware. The windmobile rom is more clean.
Both phones models are same, exact. I don't see how it would be bricked. It's just a mismatch of bootloader, thus secure check fails. I've seen people with windmobile SGH T999V flash T-mobile rom, and it works perfectly.
It's just SGH T999 tmobile version isn't able to install SGH T999V (windmobile, mobilicity) canadian variant roms because of some block T-mobile setup. Some people had done this, but didn't specificy how though.
I would like to know that please.
If you don't like bloat, then remove it. Don't flash another carrier's rom.
Hey guys so I decide to get the SGH-147 AT&T S3 off of ebay for MetroPCS which enabled me to get a 2 year squaretrade warranty. After looking back at it now, I feel it might have been a bad idea since Metro has a MIR 349.99 deal for their S3 version which would mean easier android update since it would be on Metro servers if I'm not mistaken. Anyway I can't return the ebay phone now unless there is some software or hardware problems within 30 days
So my problem
I am stuck on 4.1.1 on Kies and when I check for update, because the phone is based on AT&T servers, it won't work since I'm on Metro. I wanted to see if there is anyway for me to update my phone to 4.3 which is the current version. Although, I've heard some people have 4.3 problems?
If that's not advisable, could y'all tell me how I could atleast get to Android 4.1.2? Also is there a 4.4 update in the works?
I just got the phone today and would like to be running on something better than 4.1.1
should I flash the AT&T phone to a MetroPCS ROM lol, if any of those are actually available, or if I were to flash, should I flash it to Tmobile?
First off, if its I747, you MUST flash only those Roms. No others. Now, that's indeed a nice phone with LTE Antenna.
You really heard correct. The 4.3 upgrade from the carrier (ATT for you) /Samsung has a lot of issues. I wouldn't do it for any reason. Particularly on T-Mo network, you will have severe signal issues as reported by others. In addition, it now flashes an EFuse onto your phone along with locked bootloader and other scary stuff.I really would not do it.
Lastly, XDA is organized by devices. So even though you are a T-Mo/Metro PCS customer, you will have to post on AT&T SGS3 forum over there.
Speaking of Rom update, Please visit Root66 Thread for this device. You will find Rooted version of your Current Rom. Dunno why but he does not have 4.2.x for you. Please do your research someone else must have posted it.
Now speaking to 4.3, yes there is a way to get 4.3 on your phone without the issues I mentioned above. But first you will have to flash a Custom recovery such as CWM or TWRP with the help of ODIN on your phone. Again do your research well. Once those are in place, take a look at this thread. It will provide 4.3 experience without ANY concerns or issues. Read it carefully and then read some more. Good Luck.
Perseus71 said:
First off, if its I747, you MUST flash only those Roms. No others. Now, that's indeed a nice phone with LTE Antenna.
You really heard correct. The 4.3 upgrade from the carrier (ATT for you) /Samsung has a lot of issues. I wouldn't do it for any reason. Particularly on T-Mo network, you will have severe signal issues as reported by others. In addition, it now flashes an EFuse onto your phone along with locked bootloader and other scary stuff.I really would not do it.
Lastly, XDA is organized by devices. So even though you are a T-Mo/Metro PCS customer, you will have to post on AT&T SGS3 forum over there.
Speaking of Rom update, Please visit Root66 Thread for this device. You will find Rooted version of your Current Rom. Dunno why but he does not have 4.2.x for you. Please do your research someone else must have posted it.
Now speaking to 4.3, yes there is a way to get 4.3 on your phone without the issues I mentioned above. But first you will have to flash a Custom recovery such as CWM or TWRP with the help of ODIN on your phone. Again do your research well. Once those are in place, take a look at this thread. It will provide 4.3 experience without ANY concerns or issues. Read it carefully and then read some more. Good Luck.
Click to expand...
Click to collapse
THANK YOU! Looks like I got a lot of phone work to do over the weekend. SO do you think it was good/should I stick with this AT&T S3 or should I try to sell it for a discount and buy a Metro PCS S3? The ebay buyer won't take my phone back unless there is a hardware or software problem inherent to phone...unless I fake one ?
If it was me, I'd keep the phone. Metro's S3 does not have LTE Antenna. You'd have been stuck at lower speeds.
Perseus71 said:
If it was me, I'd keep the phone. Metro's S3 does not have LTE Antenna. You'd have been stuck at lower speeds.
Click to expand...
Click to collapse
Metro's s3 does have lte
As for the OP you can flash at&t or T-Mobile ROMs it really doesn't matter because they are backwards compatible (I have done it) and you can flash 4.3 ROMs if you don't want to take the official 4.3 update which you can easily do with Odin without the need for kies or ota.. Now, I suggest the first thing you do is flash a custom recovery and then experiment with 4.3 ROMs, if you keep having problems flash 4.1.2 roms.. There are some things you need to do though to get 4.3 up and running so I suggest you read up on it first. Good luck my friend!
Sent from my SGH-M919 using Tapatalk
It was my impression he wanted Stock Touchwiz Roms not AOSP.
Thanks for letting me know Metro has T999L
Perseus71 said:
It was my impression he wanted Stock Touchwiz Roms not AOSP.
Thanks for letting me know Metro has T999L
Click to expand...
Click to collapse
I did mean touchwiz ROMs.. And the metro model is t999n which is pretty much a t999l
Sent from my SGH-M919 using Tapatalk
Hey guys how are you all today? I have a quick question... I have rooted and installed MANY custom Roms on MANY different devices.... but never came across this problem yet. I live in Canada and I recently purchased yet another S3, but it is a US model i747 from AT&T.... now my question is, can I install stock rooted Bell or Rogers firmware on the device? Im currently running CM11 and it is a great ROM, however, when I had my S4 I was running Foxhound ROM and loved it as it was the best of both worlds. Now I would like to go back to a stock rooted ROM and use Xposed Framework so I can keep the stock Touchwiz functions, but would like to customize it to give it the AOSP look. So, am I able to flash stock rooted Bell firmware on an AT&T deviceÉ I know this is a newbie question but ive never owned a US device before so I never encountered this problem. Thank you all in advance for helping me clarify this.... Ive tried searching but didnt come up with a solid answer through search. Thanks again.
Jeff
Anybody
Do you have the 4.3 bootloader on your phone? If you do, flashing an older bootloader will brick the phone.
I would not try to flash a stock Canadian ROM as that may also brick your phone because the Canadian and US models appear to use different bootloaders.
Thank you for the reply dude.... no Im running cm11 4.4.2 but on MG2 bootloader... if this helps? I just figured that since the devices are basically the same and you can flash the same custom ROMS that you could POSSIBLY flash stock rooted ROMS from either country as well. You think its possible? Thanks again in advance for the reply!!
Jeff
Going along with what audit13 was saying, you should be safe as long as the ROM doesn't install a modem/baseband or bootloader.
Without the modem and bootloader the ROMs are interchangeable for the i747 and i747M.
If you install a Canadian bootloader there is an excellent chance you will brick your phone.
dawgdoc said:
Going along with what audit13 was saying, you should be safe as long as the ROM doesn't install a modem/baseband or bootloader.
Without the modem and bootloader the ROMs are interchangeable for the i747 and i747M.
If you install a Canadian bootloader there is an excellent chance you will brick your phone.
Click to expand...
Click to collapse
Thanks again for the info... and on that note I believe I will just forget about flashing Canadian ROM.... better safe than sorry, right!? Thanks guys for all your help!!
Jeff
I have read a bit and can't find a definite answer. I am going to pick up a att note 3 tomorrow that's been unlocked. Guy says he uses it on tmobile fine but my question is in terms of installing custom ROMs, how should I go about installing a tmobile version? I have read where people get better reception using tmobile ROMs but am uncertain about how and what to do. I know how to flash etc but also never messed with att phones on tmobile.
Do you guys that are running an att version do any extra steps or? Do you flash Tmobile radios?
Any help is appreciated.
re: AT&T Note 3
Ducter said:
I have read a bit and can't find a definite answer. I am going to pick up a att note 3 tomorrow that's been unlocked. Guy says he uses it on tmobile fine but my question is in terms of installing custom ROMs, how should I go about installing a tmobile version? I have read where people get better reception using tmobile ROMs but am uncertain about how and what to do. I know how to flash etc but also never messed with att phones on tmobile.
Do you guys that are running an att version do any extra steps or? Do you flash Tmobile radios?
Any help is appreciated.
Click to expand...
Click to collapse
It's too bad that you got the AT&T model phone instead of the Tmobile.
You will not be able to have the wifi calling feature (perhaps you don't need it)
Also the AT&T Note 3 requires "safestrap" before you can flash custom recovery,
roms, kernels or anything else which requires custom recovery (TWRP/CWM).
Here is a link which explains Safestrap and instructions on how to install it on
the AT&T note 3 phones: http://forum.xda-developers.com/showthread.php?t=2572978
Good luck!
Misterjunky said:
It's too bad that you got the AT&T model phone instead of the Tmobile.
You will not be able to have the wifi calling feature (perhaps you don't need it)
Also the AT&T Note 3 requires "safestrap" before you can flash custom recovery,
roms, kernels or anything else which requires custom recovery (TWRP/CWM).
Here is a link which explains Safestrap and instructions on how to install it on
the AT&T note 3 phones: http://forum.xda-developers.com/showthread.php?t=2572978
Good luck!
Click to expand...
Click to collapse
Thanks for the information.