Huawei U1000 Manual page 20

available until you enter the PIN2 code. At the same
time, your SIM card should support these functions.
PUK
To unlock a locked SIM card, you need to enter the PIN
Unblocking Key (PUK) code. The PUK code is usually
provided when you get the SIM card from your service
provider. If you have not received a PUK code or if you
have forgotten it, contact your service provider.
PUK2
Some SIM cards provide a PUK2 code that is used to
unlock a locked PIN2 code. The PUK2 code is usually
provided when you get the SIM card from service pro-
vider. If you have not received a PUK2 code or if you
have forgotten it, contact your service provider.
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