1. To manage your AT&T Prepaid account from your device or computer browser, go to att.com/myprepaid.
2. Enter your AT&T Prepaid wireless number and password, then select Sign in.
3. Your Current Balance will be displayed. To add money to your account, navigate to and select Make a Payment.
4. Navigate to Set Up AutoPay, select Add-Ons, switch Plans, sign up for Multi-Line Discount, and more.
5. To manage your account over the phone, from the home screen, dial 611 > select the Call key. If calling from a landline phone, dial 1-800-901-9878.
Note: You can also manage your account via text message using AT&T Prepaid star codes .