LG U8360 - Manual (Page 52)

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Settings
Security
You can set a PIN code. When it is activated, a
window asking you to enter the PIN code
appears when you turn on the handset so as to
prevent unauthorized use of the handset.
PIN code request
You can activate a PIN (Personal Identification
Numeric).
You can check the current status of
configuration from the status bar.
1. Select PIN code request from the security
menu and press the key.
2. Configure this item to On or Off. If it is On, a
PIN code will be required whenever the
handset is turned on.
3. Input the current PIN code and press
the key.
4. Entering an incorrect PIN code 3 times in the
PIN code input window invalidates the PIN
code. In this case, the PUK code must be
entered in order to reset the PIN code.
5. The maximum number of attempts at PUK
code input permitted is 10. Entering an
incorrect PUK code 10 times will restrict use
of the handset. In this case, ask 3 Customer
Service to unlock your handset.
Press the Back key in the PIN code input
window to return to the previous step.
Handset lock
You can use security code to avoid
unauthorized use of your handset.
When you switch on your handset, your
handset will request security code always if you
set phone lock to “Power on”.
You can select the menu from When switching
on, If USIM changed, Lock now, and None.
Change codes
You can change PIN, PIN2 and the security
code.
Note
If you change the code and then forget it you
will need to contact your place of purchase to
unlock it or solve this problem.