Update to post.
I took the ATT sim back to the ATT store and found out it was bad. After returning with a second SIM, the procedure given above worked. Thanks again to MWolfe for the assistance with this issue.
Update to post.
I took the ATT sim back to the ATT store and found out it was bad. After returning with a second SIM, the procedure given above worked. Thanks again to MWolfe for the assistance with this issue.