So, I sold my new AT&T Black iPhone 5 on eBay because I ended up getting a white one. However, the buyer is saying that he can't activate it. He received it last Friday (9/28), but I am only hearing about it today. I removed the SIM card that came with the phone before selling since it was tied to my account. AT&T told me all the buyer has to do is get a new SIM, since it won't have one when he gets it. Now, the seller is saying he needs the last 4 of my SSN (which there is no way he is getting) and my zip code or he is going to return it to me. I told him several times that he will need to get a SIM card tied to his own account in order to activate it. I am afraid he will try to return it and I will be out money since I spent extra money shipping it 2-day to him in NY so he could have it by Friday (which I didn't even charge him for). I did put no returns on my auction, but eBay has their Buyer's Protection thing. Is there anything I need to do to prepare in case he files a claim on eBay or something? This has been a hassle from the start and I am not sure if he is trying to scam me or if he really just doesn't know that he needs his own SIM card to activate the iPhone. Also, is there a way to see if he actually did activate it using the IMEI number or something? Thanks.