Once the SIM card is locked, you will need to use a separate code called a PUK code to unlock it. Your carrier can provide you with the PUK code for your SIM card.

The PIN (Personal Identification Number) enables secure SIM card and network access. It is provided with your SIM card. If the PIN code is entered wrongly three times, the phone is locked and requires ...

Do you want to find PUK code of your SIM card? There are three ways for you to get this information. In this article we will be helping you find the PUK code of you SIM card. A PUK code for a SIM ...

PUK Code (PIN UnlocK Code) - definition A PUK code is required if a GSM SIM card was locked after entering the wrong PIN code three times in a row.

The attacker could just swap the SIM in the victim’s device, and perform the exploit with a SIM card that had a PIN lock and for which the attacker knew the correct PUK code.

The SIM card also has an associated PIN Unlock Key (PUK). If you attempt to do a SIM PIN Lock, and you fail to guess the original PIN, the SIM will be locked with the PUK.

Entering a wrong PUK code ten times in a row disables the SIM card permanently. Both the PIN and the PUK codes are supplied by the operator, but only the PIN code can be changed by the user.