I really need some help yesterday i flashed cm7 from stock. Eveything was working fine then after I made a phone call my mobile data dropped out. I tried everything I could think of while running the rom but I couldn't get it to work So I used odin to go back to stock, which didn't work. I then tried using heimdall to go back to stock and that didn't work either. If anyone has any advice please give it I'm desperate.