I've just spent the past 1.5+ hours hanging up and dialing different reps to request my iPhone 4 (OVER 4 YEARS OLD!) to be unlocked from their online site: https://www.att.com/deviceunlock/client/en_US/termsAndCondition Every time I get the same response. Unless I can tell them who the original owner was, or I'm a current or former customer, they won't do it. It doesn't even matter to them that the phone isn't flagged as stolen or blacklisted. They just refuse to do it. I purchased this phone through GameStop for $300 as part of their used iPhone program. It was used on StraightTalk as part of their bring your own phone program. Now I'm with T-Mobile, and trying to use my phone on their network. My IMEI is --- if anyone is willing to help. It's greatly appreciated, because otherwise I'm S.O.L. apparently.