I think you can use any commercial unlocking service to get it unlocked - it's just that AT&T won't unlock it unless/until the criteria are met.
Google AT&T Nokia 520 unlock, you'll find some options.
I think you can use any commercial unlocking service to get it unlocked - it's just that AT&T won't unlock it unless/until the criteria are met.
Google AT&T Nokia 520 unlock, you'll find some options.