So I had an interesting situation occur when I was preparing to sell my iPhone 6s. When I received my new iPhone 7, I followed the usual procedure to switch from the iPhone 6S to the iPhone 7: 1. Backup iPhone 6S to iTunes 2. Turn off find my iPhone (this removes the activation lock) 3. Place the in Airplane mode and turn the power off. After following this procedure, I set the iPhone 6S aside and migrated to the iPhone 7. I do this every year so I'm very diligent and knowledgeable about the process. A few days later something weird happened. I turned on the iPhone 6S after being off for 2 days. I plugged it into iTunes to do a full restore and at the same time unlock the phone (after contacting AT&T). After the restore I was greeted with the activation lock screen with a completely different e-mail address associated with the phone. This did not make any sense. The phone was turned off and my screen lock code was still active so nobody would have been able to pick up the phone and get into it. Besides, the phone was in a safe place and nobody even touched it for 2 days. I immediately contacted Apple and explained the situation. I provided proof that I purchased the phone from them. They were very nice about it and said they would elevate the ticket up to higher management. A few days later they contacted me and said that after reviewing the documentation, they (Apple) removed the activation lock so I was now free to sell the phone. I don't really know what happened but my guess is that someone at Apple was messing with activating someone else and "fat fingered" the IMEI. Either that or there was a hack at some point. Who knows. I have read numerous times on this forum and other places on the web that Apple is unable to remove the activation lock on any iPhone. Well my friends, this simply is not true. Apple can do it and this is proof.