User's Manual

USER MANUAL
41
PIN personal identification code, usually refers to PIN1,
along with the SIM card to provide, is using the SIM card
password.
PUK personal unlock code, along with the SIM card to provide.
When three consecutive input PIN code error, SIM card is
locked for the SIM card lock, or to modify the PIN code.
PIN2 personal identity code 2, provided by the network operator,
in the special features, such as the need to support the
SIM card protected by the fixed number dialing (FDN) and
other functions
PUK2 personal unlock code 2, along with the specific SIM card
to provide, for modifying or opening the PIN2 code.