Hi,
PUK is Personal Unlocking Code is used in GSM mobile phones to unblock the blocked phone. If you type in the wrong PUK ten times in a row, the device will become permanently blocked and unrecoverable. So it means you need to buy a new SIM card or if you are using a post paid SIM you can call your network provider for them to change your SIM card.
I hope I answered your question.
Thanks a lot!!!
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