Okay before everyone starts telling me what I did wrong. I.e. bought it on craigslist, paid cash, met the guy between locations. On the phone the guy seemed like a good person. But I now I know that I am way to oblivious to the real world. After telling some friends, they have given me the felling that I bought a stolen iphone 4. I tried to see if someone owned it before me but it has no sim card and I can not turn it on. It says insert sim card and plug into itunes. I have no way of telling. I think the phone was whipped clean and there doesn't seem to be any information on it. I did some research but I really don't understand the rules about having the phone. Can I activate this phone? If I do, will I be in trouble for using it? I don't know what to do. I would have bought one form the apple store or att but they've been sold out for like a month now. If I call Att and try to add it to my account will I get in trouble, I mean even if I told them the situation? I tried to contact the seller and have not gotten a response, which makes me even more nervous.