LG U8290 Manual page 125

Display information
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.
Turning your handset on
Ensure that your SIM card is in your handset and the
battery is charged.
Press and hold the
Enter the SIM PIN code that was supplied with your
SIM card if PIN code setting is on.
After a few seconds you will be registered on the
network.
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key until power is on.
Turning your handset off
Press and hold the key until power is off.
There may be a few seconds delay while the handset
powers down.
Do not re-power the handset during this time.
Access Codes
You can use the access codes described in this
section to avoid unauthorized use of your phone. The
access codes (except PUK and PUK2 codes) can be
changed by using the Change codes feature [Menu
#.4.3.3].
PIN code (4 to 8 digits)
The PIN (Personal Identification Number) code
protects your SIM card against unauthorized use. The
PIN code is usually supplied with the SIM card. When
the PIN Code Request is set to Enable, your phone will
request the PIN code every time it is switched on.
When the PIN Code Request is set to Disable, your
phone connects to the network directly without the
PIN code.