Unlock ANY US AT&T iPhone. Make sure it's activated first. Permanent and works on any iPhone including those that are under contract, reported lost/stolen, or even those not in good standing with AT&T.
Might take 24-48hours, but less than 24 hours most of the time. To know/verify unlock status, insert another SIM from another provider or do a backup/restore process via iTunes.
Only for US AT&T locked iPhones.
1 bitcoin per unlock.