How much is an ATT black iPhone 4S worth now? Where is the best place to sell? It's 32 GB and Pristine condition, original box, packing, accessories. ---------- Also, since it previously was contracted with ATT up until a year ago, do I need to do anything like ask ATT to unlock it somehow? I don't know how this process works. I of course know the password, etc so I can reset it to new condition. Is that all I need to do to the 4S to safely sell it without it being a problem for the purchaser and without revealing my iCloud account info, PW, etc?