Mozilla Ditches Google, Makes Yahoo Default Search Engine

Mozilla and Google have had a long-standing relationship of about 10 years. Google … more

Learn More About Linux with Linux Man Pages

Linux is quite a powerful and very configurable operating system. Thanks to some user-friendly … more

Detect, Avoid IMSI-Catcher Attacks with Android IMSI-Catcher Detector

Privacy is always an important topic, as well as a delicate one to … more

Materialized LeanDroid Fights Your Poor Battery Life

Battery life has always been one of the biggest problems facing most Android devices. … more

Welcome to XDA

Search to go directly to your device's forum

Register an account

Unlock full posting privileges

Ask a question

No registration required
Post Reply

[Q] Unlock AT&T Galaxy S3

OP ledthezeppelin

28th January 2014, 03:10 PM   |  #1  
OP Junior Member
Thanks Meter: 0
 
5 posts
Join Date:Joined: Mar 2011
Hey guys,
I have an ATT Galaxy S3 but I recently switched to TMobile. I don't have the sim card yet, hopefully get it tomorrow, but my ATT sim card has been deactivated. Since I need to unlock my phone to use Tmobile, I was looking at some forums and I could do it using the dialpad and pressing *#197328640# and following some steps. But I read that this was possible in only a 4.1.1 ROM?

Right now I have MIUI v5. Do I have to downgrade in order to use the *#197328640# code and unlock?

Cheers!
29th January 2014, 12:35 AM   |  #2  
audit13's Avatar
Senior Member
Toronto
Thanks Meter: 840
 
2,996 posts
Join Date:Joined: Jun 2012
More
You must be running stock 4.1.1 in order to have the necessary menu options.
29th January 2014, 01:57 AM   |  #3  
theramsey3's Avatar
Senior Member
Thanks Meter: 153
 
355 posts
Join Date:Joined: Jun 2012
Have you ever been on the 4.3 OTA? Or the 4.3 bootloader? If you haven't been on them you can use Odin to go back to 4.1.1 however if you have the 4.3 bootloaders and you try you will certainly have a hard bricked phone that might be recoverable via SD card or you will need a jtag.

Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes