- Sign in to your AT&T Prepaid account. If it’s your first time signing in, select Don’t have a user ID? Create one now and follow the prompts.
- Select Manage Prepaid account, then Make a Payment, and then Pay and Enroll in AutoPay.
- Choose your payment method or add a new payment method.
- Select Continue.
- Read and agree to the AutoPay terms and follow the prompts.