AT&T GoPhones are refilled online through myAT&T, by phone or by using a GoPhone refill card. GoPhone users can sign in to myAT&T by entering their 10-digit wireless number and 4-digit password. For refills via phone, call the automated phone service at 800-901-9878.
GoPhone refill cards can be used to refill via phone by dialing *888* and entering the refill card PIN number. The 4-digit password for myAT&T is originally the last 4 digits of the wireless number and can be changed once you log in to myAT&T. Payment methods for online refills at myAT&T include credit cards, major debit cards, refill cards and checking account as of 2016. For phone refills, the same payment methods are available except checking accounts.