How do I unlock my phone from the carrier
How do I unlock my iPhone from the carrier
iPhone XR, iOS 16
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Probably you have a locked iPhone
Carrier Lock:- Request your iPhone’s original Carrier to unlock your iPhone and if they agree and do it, then you may know the further process here --> How to unlock your iPhone for use with a different carrier ...
Device Unlocking Policies | Verizon Privacy Policy
Unlock a Phone or Device - AT&T Device Unlock Portal