LG C1100 - Manual (Page 63)

Accessing the Menu
63
Change codes [Menu 4-4-5]
PIN is an abbreviation of Personal Identification Number used to
prevent use by only unauthorized person.
You can change the access codes: PIN code, PIN2 code, Security
code.
1. If you want to change the Security code/PIN/PIN2 code input
your original code, and then press
< [OK].
2. Input new Security code/PIN/PIN2 code and verify them.
Network settings [Menu 4-5]
You can select a network which will be registered either
automatically or manually. Usually, the network selection is set to
Automatic.
Automatic [Menu 4-5-1]
If you select Automatic mode, the phone will automatically search
for and select a network for you. Once you have selected
“Automatic”, the phone will be set to “Automatic” even though the
power is off and on.
Manual [Menu 4-5-2]
The phone will find the list of available networks and show you
them. Then you can select the network which you want to use if this
network has a roaming agreement with your home network
operator. The phone let you select another network if the phone fails
to access the selected network.
Preferred [Menu 4-5-3]
You can set a list of preferred networks and the phone attempts to
register with first, before attempting to register to any other
networks. This list is set from the phone’s predefined list of known
networks.