Huawei U3315 User Manual page 17

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
server provider. If you have not received a PUK code
or if you have forgotten it, contact your local customer
care centre.
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 server
provider. If you have not received a PUK2 code or if
you have forgotten it, contact your local customer
care centre.
10