LG S5100 User Manual page 108

PUK1 code (4 to 8 digits)
The PUK1 (PIN Unblocking Key) code is required to
unlock a PIN blocked phone. The PUK1 code may be
supplied with the SIM card. If not, contact your
network operator for the code. If you lose the code,
also contact your network operator.
PUK2 code (4 to 8 digits)
The PUK2 code, supplied with some SIM cards, is
required to change a blocked PIN2 code. If you lose
the code, please contact your network operator.
Security code (4 to 8 digits)
The security code protects the unauthorised use of
your phone. The default security code is set to
' ' 0000' ' and the security code is required to delete all
phone entries and to activate the Reset settings
menu. Also, the security code is required to enable or
disable the phone lock function to prevent
unauthorised use of the phone. The security code
default setting can be modified from the Security
settings menu.
BARRING PASSWORD
The barring password is required when you use Call
barring (Menu 7.4.3) function. You obtain the
password from your network operator when you
subscribe to this function.
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