Rooting Samung Galaxy S3 for ATT,TMOBILE,VERIZON,SPRINT,US CELLULAR and INTERNATIONAL
How to root samsung galaxy s3 att, tmobile,verizon,us cellular sprint and International:
Summary:
1)Put the phone in download mode and flash the clockworkmod recovery using Odin
2) install the Super User using the clock work mod recovery
Download all files here: Link 1
Detailed Installation steps
Note: Make sure your device drivers are installed if not install them from here : Download samsung galaxy s3 windows drivers
Setting up Odin:
1.Fire up the Odin.exe and then uncheck autoreboot on the left top.
2.click on the PDA button and choose the " CWM-Recovery-LTE-SGS3" and tar file which is the clockworkmod recovery image
Copying the root files on to the sd card:
3.copy the "TeamEpic-Root-from-Recovery-v5.zip" on to the sd card
Putting the phone in download mode:
4.Now power off the phone and hold volume down + power button + home button till something flashes on the screen and leave them to get it into download mode and then connect the wire to the phone. (volume up to accept download mode)
Flashing the CWM to the phone:
5.when u see the green button on top of the ODIN just click on the start button (flashing takes approx 6 seconds)
Booting off CWM recovery to install SU:
6.Now pull off the battery to power off and then put the battery back on the device
7.To get the device to boot off CWM recovery, hold volume up +power button+ home button till something flashes on the screen and leave them
Installing the Super User through CWM recovery:
8.Mouse up choose zip from sd card and choose "TeamEpic-Root-from-Recovery-v5.zip" and install.
reboot the phone and you should be done.
verification:
install root checker from play store and check to see if you have actually got the root access
XDA link: http://forum.xda-developers.com/showthread.php?t=1743780