Okay, so I found some people in my area that would like to trade their iPhone 8GB for my iPod touch 16gb. I think its a pretty fair deal, and a step up for me. I do however need some tips on common problems with the iphone, so I can choose which one is in the best condition. I really love the back of the iPhone, it doesn't get scratched as easily... so I think. Is their any problems I should look out for in the trade? Thanks in advance. PS: I am not buying the iphone to work on att... in fact I do not plan to use the iphone as a phone at all, maybe when touchmods figures out voip with it, but the camera and speakers are worth it to me considering space is not really an issue in my library.