Figure this will be a really helpful thread. I sold an iPhone that I installed the iOS 7 beta onto earlier this year and now it seems the iPhone might be trying to lock itself to my account even though the new owner set his account up and it was working fine until he got back from China and tried to reactivate. I don't see his phone on my account. What can I do for him now? I really want to help. I'm not 100% sure it requires my account but he can't log back in.