I traded my Samsung galaxy II for a LG Thrill because I had the HTC Evo 3D when I was with Sprint but they kicked me off because I was using too much of their unlimited service, anyway I got my LG Thrill and I unlocked it but I CAN ONLY GET EDGE ON IT!! What do I need to do to atleast get 3g. PLEASE HELP!! I know the 4G is on another frequency but the 3g isn't.