@Jelly16 What model iPhone is it? It might not be compatible (or it might).
This is the public AT&T community forum (not AT&T support), please do not post personal info.When solved / helped, please click "Accept solution" which helps other people to find an answer more quickly. Just because my answer does not solve your issue (or agree with you), it may still be the correct information...The (very) fine print - This footer is at the bottom of all my posts, it's particulars may, or may not, apply to you & your post).
AT&T GoPhone is changing its name to AT&T PREPAID. New name - same great service, network and value!