Huawei U5707 User Manual page 16

Powering On/Off
◆
PIN2
Some SIM cards provide a PIN2 code. Some special
functions such as the "Fixed Dialer Number" are not
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 usu-
ally provided when you get the SIM card from your
service provider. If you have not received a PUK2
code or if you have forgotten it, contact your service
provider.
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