"I ordered an unlocked iPhone 4 from Thriftcomputers.com, but it arrived locked. They tried to help me unlock it, being very cooperative, but they apparently did not know that the iPhone 4 with the iOS 5 could not be unlocked. They apologized, fully refunded my money and even sent me a free cell phone. I would buy from them again as I know if there is any problem they will do their best to fix it."