I'm selling my 4S and I was able to get my phone unlocked this a.m. by calling the AT&T number, selecting technical support, other. He sent the request as I spoke with him and then told me to backup and restore with iTunes. He did ask why I needed it unlocked and I told him perhaps a family member might want to use it overseas.... The phone is not off contract, still have 13 months left. I upgraded from a different line. Just wanted to let you guys know. It's worth a shot if you're looking to sell your 4S when the 5 comes in.