LG U8500 User Manual page 142

Unlock function
If you press the OK key, a popup screen appears
asking you to input the Security code to unlock the
phone. The Security code is configured by selecting
Settings > Security > Change password. If you key
in an incorrect Security Code, the phone will remain
in Handset Lock status. If you key in the correct
Security Code, the phone will be unlocked, and the
idle screen will be displayed. If you have turned the
phone off in the Handset Lock status, you will find
the phone remains in Handset Lock status when you
turn it on.
Barring password
This service obstructs calling service in some
condition. and this condition can be edited by users.
(9. Settings > 7. Security > 3. Call barring) The
barring password is required when you use the call
barring function. The password is obtained from the
your network operator's customer service when you
subscribe to this function. While this service is
activated, caller will hear the information message
that this call is not connected because of user's
reason.
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