Using since 2 days .... everything's perfect, except 2G/3G data connection stops working .... i have to reboot phone every time to make it work. does anybody have similar problem ????
May be you have lost your IMEI. You can get your IMEI back recovering your EFS backup (if you made one) or flashing a Gingrebread Stock ROM (look for one with PDA, PHONE and CSC) with Odin.