View Account Number: My T-Mobile

You can find your account number either on your paper bill or by logging in to My T-Mobile.

Viewing your account number at My T-Mobile:

1. Log in to My T-Mobile. If you're already logged in, click Back to Your Account in the upper right corner of your screen.
2. Under Manage, select Billing & Payments.
3. Click Bill Summary.
4. Your T-Mobile account number is displayed above the Service charges heading in the middle of the page.