Hey, I've searched far and wide and can't find a definitive answer. Forgive me if its been discusses. I did search! I have a Sprint iPhone 5 (99xxxx IMEI) and would like to unlock for use on AT&T (on an MNVO on their network), so a USA-based GSM carrier. For an international unlock I can just call up Sprint cause I'm in good standing but I'm looking for a in-country unlock. I've heard that phones activated to CDMA networks can't be unlocked for USA GSM, and I've heard the other way also. Is there a site offering this kind of unlock? Thanks guys!