How to unlock my iPhone's SIM?
I cannot unlock my sim
[Re-Titled by Moderator]
iPhone 11, iOS 16
Question marked as
if you mean that you put in the wrong sim passcode so many times it locked itself then you need the puk code
Use a SIM PIN for your iPhone or iPad - Apple Support
and
How do I find my PUK code? - Apple Community
if you mean that your phone is sim locked to another carrier than the one you wish to use then you need to contact the carrier it's locked to
and also read
How to unlock your iPhone for use with a different carrier - Apple Support