sim lock

If you mean getting the phone unlocked so you can use it with a different carrier, contact the carrier it's locked to.

If you're being asked for a SIM PIN or PUK code, contact the carrier that issued the SIM card.

Hello,

• Apple can’t help with this issue but you can follow this guide to learn how to get your carrier to unlock your device (How to unlock your iPhone for use with a different carrier - Apple Support)

Drake