Can't unlock phone with 2 years on AT&T
I am trying to unlock an iPhone 6. The phone was on contract on AT&T for around 2 years, then gathered dust in a drawer for a year or so. Now I can't unlock the phone:
>Current status - Denied
>We can't unlock this device because it hasn't been active for at least six months of paid service.
>You can submit a new request after six months of paid service.
This can't be correct. The phone has had years of paid service. Can you help me to unlock the phone please?