Locked SIM - what should I do?
My phone has a message with 'Locked SIM" what should I do? Ignore or have it changed. If I travel to another state or country how will the "Locked SIM affect me
iPhone 12
Question marked as
Locked Sim refers to it having a passcode usually referred to a PUK code. It means the sim cannot be used and as such you would have no service at all. A Locked sim card cannot be used until the Sim Pin or PUK code is provided.
If you don't know the PUK code for it, then you need to contact your carrier / service provider to get the code from them or a new unlock SIM card.
See here: link-> Use a SIM PIN for your iPhone or iPad - Apple Support