PUK Pin needed for unlocking SIM Card

Read this Apple Support article about how to use a SIM PIN --> Use a SIM PIN for your iPhone or iPad - Apple Support

A PUK (Personal Unlocking Key) is used to unlock a SIM which has had an incorrect SIM PIN entered too many times.

Go to the section:

"If you forgot or don't know your SIM PIN

Never try to guess a SIM PIN or PUK code. The wrong guess can permanently lock your SIM card, and then you would need a new SIM card. If your device asks for a PIN [or PUK] code that you don't know, here's what to do:

1. Contact the carrier that gave you the SIM card. If you aren't sure which carrier to call, remove your iPhone SIM card [refer to: Remove or switch the SIM card in your iPhone - Apple Support ] or iPad SIM card [refer to: Remove or switch the SIM card in your iPad - Apple Support ] and check the card for the carrier's name or logo.

2. Ask your carrier to help you unlock your SIM card using the default SIM PIN or PUK code. 

3. If you can't unlock your SIM card using the SIM PIN or PUK code or if an alert says, "PUK exhausted," ask for a new SIM card."

*If you enter the wrong SIM PIN too many times, your wireless carrier might be able to give you a Personal Unlocking Key (PUK).

First you are asked for a SIM PIN and if that is entered incorrectly too many times, you will be asked for the PUK code. If that is entered incorrectly too many time the SIM will be unusable and you will have to purchase a new one.

You are only able to get either code from your Cell Provider, Apple does not know what it is. Contact them and the problem will be solved. Many time you are able to get it by logging into your account on the cell provider website, if not possible there, then call them. Just for your information it stands for Personal Unlocking Key.

caymari wrote:

What is code is a puk code

Go back and read my post again. I explained that already.

A PUK (Personal Unlocking Key) is used to unlock a SIM which has had an incorrect SIM PIN entered too many times.