07-20-2010 05:40:01 AM
Are you looking for the PUK code or to unlock your phone for use with other providers?
The PUK code unlocks the SIM so that it works properly with AT&T. It can be found on your online account.
If you want to unlock your phone for use with other providers, that cannot be found online. If you have had your AT&T account long enough, customer service can give you the codes to unlock the phone. Otherwise you will have to contact an "unlocking" company and pay for the unlock codes.