Hi guys, I'm new here. I've heard nothing but great things from people that own iphones. I didn't believe how good it was until I messed around with my roommates iphone 4S. Now I really want an AT&T unlocked 4S for T-mobile network. but buying it brand new is kind of expensive so I was looking on craigslist and did some research. most people are selling the unlocked iphone 4s after their contract expires. The most terrifying thing I heard was that someone buys a used iphone, puts in the T-mobile SIM, everything works and everybody's happy, until the seller decides to report it stolen couple weeks later. I know that checking the IMEI number on iphoneox.com will tell you the status of the phone. My question is, what do I need to do to have the seller transfer ownership to me when i buy it so I can make sure nobody can report the phone lost or stolen because I have ownership? second question is, what about AppleID? I have no idea how that works. does anybody here have this buying used iphone experience before? any input is appreciated. Thanks in advance. If you can think of any tips towards buying a used iphone 4S, please comment. Thanks.