How to unlock notwork provider lock on my iphone 13 pro max
I can change network provider but i can not unlock old network provider lock
Question marked as
Only the carrier to whom the phone is locked can release the lock – if they choose to do so.
How to unlock your iPhone for use with a different carrier - Apple Support
If you are not their customer, or if this is a phone bought on a contract that has not been fully paid off, there is a good chance that the carrier will refuse to do so.
