LG C1100 - Manual (Page 61)

Accessing the Menu
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2. Set On/Off.
3. If you want to change the setting, you need to enter PIN code
when you switch on the phone.
4. If you enter wrong PIN code more than 3 times, the phone will
lock out. If the PIN is blocked, you will need to key in PUK code.
5. You can enter your PUK code up to 10 times. If you put wrong
PUK code more than 10 times, you can not unlock your phone.
You will need to contact your service provider.
Phone lock [Menu 4-4-2]
You can use security code to avoid unauthorized use of the phone.
Whenever you switch on the phone, the phone will request security
code if you set phone lock to On. If you set phone lock to
Automatic, your phone will request security code only when you
change your SIM card.
Call barring [Menu 4-4-3]
The Call barring service prevents your phone from making or
receiving certain category of calls. This function requires the call
barring password. You can view the following submenus.
• All outgoing
The barring service for all outgoing calls.
• Outgoing international
The barring service for all outgoing international calls.
• Outgoing international except home country
The barring service for all international outgoing calls except home
network.
• All incoming
The barring service for all incoming calls