Hello everyone, I am new here and I know nothing about the Iphone. anyway, I just purchased one from a friend of mine. Here's the problem, when I insert my SIM card I previously had in my AT&T RAZR phone the only thing that displays is emergency calls only. However, with his SIM card in it will display everything including his pictures, videos and etc. so please help me out as soon as possible. It's a 3g with 8 GB if that makes a difference.