If you need to unlock your GSM Samsung Galaxy S3 or Note 2, here's how:
Dial the following keys #197328640#
Main Menu > [1] UMTS > [1] Debug Screen > [8] Phone Control > [6] Network Lock > Options [3]Perso SHA256 OFF > (after choosing this option, wait about 30 seconds, then go back one step by pressing the Menu button then select Back, now you are in [6] Network Lock then choose [4] NW Lock NV Data INITIALLIZ ..... wait for a minute then reboot your phone... enjoy!!!
This is a PERMANENT UNLOCK, and does NOT trigger anything for warranty
/standard disclaimer: I am not responsible if you don't follow directions and what you do with your phone. Credit goes to http://forum.xda-developers.com/showpost.php?p=34661189&...