To check the balance on an AT&T GoPhone, call 611 from the GoPhone to speak with a customer service representative. You can also check the balance by logging into your online account or by dialing the appropriate GoPhone star codes.
To use GoPhone star codes to check the balance, dial *777# for account balance and expiration date or *7771# for remaining minute balance. AT&T then texts the requested information directly to the GoPhone. The AT&T website provides a complete list of star codes.
Another way to check your balance it to download the myAT&T app. Opening the app prompts you to log into your GoPhone account. If logging in for the first time, the user ID is your ten-digit cell phone number, and the password is the last four digits of the number. One logged in, go to Usage Summary to view the remaining balance. The GoPhone account is accessible through any web-enabled device.