Here's a beer. Sit down and put your feet up. This might take a while. Bought an iPhone 4 (AT&T) from the Apple Store in early Jan 2011. In the two years of the account, had the phone replaced under warranty twice (first for the home button problem, second for a crack in the LCD (under the glass) that developed a week after getting it). In late Jan 2013, tried to use the AT&T unlock device site to unlock the phone. Got a reply that said the following. I assume this is because the IMEI of my current phone does not match the IMEI of the phone I originally purchased. I (unfortunately) didn't pursue it any further at that point. A month later, the business that I partially own (and paid my phone bills) was struggling and the phone bill didn't get paid for a few months. The phone got disconnected, and eventually, the account was deactivated by AT&T. Fast forward to today. Went to the AT&T store to pay up the past due balance, get the phone unlocked, and get it set up on T-Mobile. AT&T was unable to help, since I no longer had an account with AT&T (in fact, my former phone number has been reassigned to another customer). AT&T cannot request an unlock from Apple if there is no account active for the phone in question. When I asked about activating a new account for this phone, I was told that AT&T does not do "bring your own phone" plans. When I asked about a pre-paid plan, I was told that AT&T does not do pre-paid for iPhones. So, I left the AT&T store, being referred to the phone kiosk at the mall that is rumored to be able to unlock iPhones. Currently, I resubmitted a request to the AT&T unlock device page. When that comes back negative, I'll call AT&T support and take that as far as I go. Then, I'll call Apple support. Anybody else ever been able to get an AT&T iPhone (post-contract) successfully unlocked after having the account deactivated? If all else fails, I can either sell it as is on eBay, or I do owe my son an iPod Touch.