UTOK 500Q HD User Manual page 27

that case you need to use the PUK code to unlock the card.
The PUK code is generally kept by the network operator.
PUK code:
The PUK code (the PIN unlocking password, 8 digits) is used
to unlock the locked PIN code. The PUK code is provided by
the manufacturer together with the SIM card. If you have
entered the PUK code incorrectly for ten times, the SIM
card will be invalidated. You need to ask your network
operator for a new card.
The correct PUK2 code. The operations are as follows:
·
Enter the correct PUK2 code in line with the prompt on the
screen to unlock the PIN2 code.
·
Then enter a new PIN2 code and press the OK soft key.
·
When you are prompted to reenter the new PIN2 code,
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