Pin And Puk - Huawei Mobile Phones User Manual

13 PIN and PUK

The personal identification number (PIN) protects your UIM card
from unauthorized use.
If you enter the PIN incorrectly 3 times consecutively, the PIN is
blocked and the phone prompts you to enter the PIN unblocking
key (PUK). If this occurs, enter the PUK to unlock the blocked PIN.
If you enter the PUK incorrectly 10 times consecutively, the UIM
card will become permanently invalid, and you must contact your
service provider for a new UIM card.
Both the PIN and the PUK are provided with the UIM card. For
details, contact your service provider.
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