It took me 3 tries to get my old iPhone 4 unlocked:
Try 1: called in, gave them old account info and IMEI for old phone. 5 days later I got an email stating I wasn't eligible due to no existing IMEI. I had done a swap of my original at the Genius bar right after purchase due to a faulty microphone. I guess AT&T still had my old IMEI on file. So I called back in, explained it, they re-requested the unlock.
Try 2: Got an email denying the unlock due to an "unpaid balance.". I dig up all my old invoices as proof that there was no unpaid balance, etc. I called in again, submitted proof that old account was never delinquent, etc. The rep confirms that account was closed and was fine and they put in a third request for unlock.
Try 3: 10 days after try 2, I FINALLY get the unlock email. IPhone 4 now unlocked.
Moral of story: AT&T is effed up. Keep trying and you'll eventually prevail.
Try 1: called in, gave them old account info and IMEI for old phone. 5 days later I got an email stating I wasn't eligible due to no existing IMEI. I had done a swap of my original at the Genius bar right after purchase due to a faulty microphone. I guess AT&T still had my old IMEI on file. So I called back in, explained it, they re-requested the unlock.
Try 2: Got an email denying the unlock due to an "unpaid balance.". I dig up all my old invoices as proof that there was no unpaid balance, etc. I called in again, submitted proof that old account was never delinquent, etc. The rep confirms that account was closed and was fine and they put in a third request for unlock.
Try 3: 10 days after try 2, I FINALLY get the unlock email. IPhone 4 now unlocked.
Moral of story: AT&T is effed up. Keep trying and you'll eventually prevail.