If your SIM card is locked and requesting a PUK code, simply find the packaging and enter the provided PUK code. Unlock the SIM Card without a PUK code However, if you lose the SIM packaging and ...

A PUK code is required if a GSM SIM card was locked after entering the wrong PIN code three times in a row. Entering a wrong PUK code ten times in a row disables the SIM card permanently.

your phone prompts you to enter a Personal Unlock Key (PUK), an eight-digit number. This number is located on the packaging your SIM card came in. If you don't have the box, contact your carrier ...