Find your account number

    Learn how to find your account number on My T-Mobile. If you have a Pay in Advance (Prepaid) account, your mobile number is your account number.


    To find your account number:

    1. Log in to My T-Mobile.
    2. Click BILLING.
    3. In the Current charges box, click Print bill (PDF) in the upper right corner.
    4. Click the VIEW SUMMARY BILL button.
    5. Your Account number will display at the top of the bill.