Hello any help would be appreciated here...I have a AT&T razr v3, and I placed my T-Mobile sim card in it and it said enter subsidy code and i tried a few codes thinking i knew it and now it says contact service provider....Please help me unlock this phone lol....My imei # 357713013364069 Thanks so much please help me because my old razr is destroyed lol.

Cell Phones - Motorola Mobility - RAZR - RAZR V3