Hello guys. Gonna make it sweet and simple.. need help. Me and my sister both had the iPhone 4's and the contracts expired this june (ordered it two years ago launch date) so we got our iPhone 4's UNLOCKED. Mine is still usable and currently using it, no problems but the the home button is a little worn down. Not a problem. My Sisters iPhone completely died and we took it to the Genuis bar. They said that the motherboard is done and it wont even charge or work. It's completely done so keep in mind, this is the unlocked iPhone 4 that we got it unlocked from ATT. She went ahead and bought a new one for $160(or $150..) from Apple and it's not unlocked. Can we do something about this? Would like to have it unlocked again.