Unlocking a used iPhone
I'm trying to unlock a used iPhone 7, but I'm getting the error "The IMEI you entered does not appear to be an AT&T wireless phone or tablet."
- I believe the phone to be locked to AT&T, but how can I tell for sure?
- If it is locked to AT&T, how can I figure out what the problem is in order to unlock it? (It was purchased used, and is more than 2 years old, so I would expect post paid plans to be already paid for.)