change sim card on gophone
Your new SIM card will be shipped by mail. When you receive it, all you have to do is insert it into your phone and activate your service at att.com/gophone.To check your data balance, buy a data package, add money, reset your password and more, visit att.com/mygophone.our new SIM card will be shipped by mail. When you receive it, all you have to do is insert it into your phone and activate your service at att.com/gophone.