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.

You'll need a PIN Unlocking Key (PUK) code to unlock your SIM card. Here are the steps to get your PUK number. Dial *100*8# from another Safaricom line Enter your Safaricom phone number Enter your ...