I switched from a 5 to a 6 plus and just recently had my 5 unlocked by AT&T. I did the backup and restore as the instructions said to. But during the entire process it never popped up saying Your iPhone is unlocked. Is there any way to check if my iPhone 5 is unlocked? I don't have a Verizon nanosim and don't want to pay $20 for a Tmobile card just to check and not use any data.