Most AT&T users will need a transfer PIN if they wish to move their account or a line to a new carrier. Here's how you can find your PIN in MyAT&T.

To initiate phone number porting, ask your old carrier to release your number and share the transfer PIN. Find the perfect carrier for you on T-Mobile's airwaves ...

Choose Other account services in the View accounts menu, from the Account services menu, choose Request a PIN reminder, and enter the last 8 digits of your 16-digit card number. Select Request PIN and ...