How to Port From AT&T to T-Mobile

By Amy McClain

Number porting is regulated by the FCC and gives you the freedom to keep your wireless number even if you switch service providers. Moving from AT&T Wireless to T-Mobile can be accomplished in a few easy steps. T-Mobile will need some basic account information from you to initiate and complete the port. Your AT&T phone is not compatible with T-Mobile service unless it has been unlocked, so in most cases you will need a new phone.

Enter your phone number into the "Phone1" field using the link in the Resources section.

Follow the onscreen instructions to authorize the transfer. You will need to choose a T-Mobile service plan and phone (if desired). Provide your AT&T account details when prompted -- it may be helpful to have a recent AT&T invoice handy.

Allow approximately 24 hours for the number port to complete. Do not cancel your AT&T service -- your account must be open for the port to be successful. The AT&T services associated with your phone number will be canceled automatically when AT&T releases it to T-Mobile. In most cases, your AT&T phone will continue to work until the port is complete.