Did you enter the wrong PIN code 3 times? Enter your PUK code to unblock the SIM card of your mobile. Afterwards, you can choose a new PIN code.
There are 3 ways to retrieve your PUK code:
Don’t confuse the PIN code of your SIM card with the entry code of your mobile. If you forgot the entry code of your mobile, please contact the manufacturer.
Be careful when entering your PUK code.
If you enter the wrong PUK code 10 times, your SIM card will be blocked permanently. In that case you will need to request a new SIM card in a point-of-sale.