[Q] galaxy S4 AT&T Regional lock breaking for MK2 OTA
i am able to root Galaxy S4 AT&T SGH-I337 successfully. i also tried chainfire regional lock away tool to get rid off sim unlock . but when i try to use Sim card other than AT&T , it does not work . it is asking for sim unlock code . i tried same method for MF3 build and i am successful. does any one know how to unlock MK2 build. please help me.