I decided to buy a used, unlocked Iphone 6 from Craigslist. Meeting the seller today at an Apple store, so the safety factor is covered. My biggest worry is not to get scammed by buying a stolen or not fully paid off phone, which may be blocked by a phone company to which money is still owed.. I intend to check the IMEI online , but are there any other steps I could take to be sure that the phone is clean and not stolen? BTW, what is the website address to check the IMEI? The seller will not email me the IMEI "due to past experiences", but when we meet, I can do any checks I want, including inserting my sim card and testing it.