LG G3100 User Manual page 121

If you select this menu, you will add the CB message category in
Phone memory with its nickname.
If you select this menu, you can see CB message category which
you added. If you press [Option], you can edit and delete CB
message category which you added.
You can select the CB message category in active list by pressing
[Select].
You can listen to your voice message(s) and get the voicemail
centre number.
You can call voicemail centre if you want to listen to voice message.
You can get the voicemail if this feature is supported by the network
service provider. When new voicemail is arrived, the symbol will be
displayed on the screen. Please check with your network service
provider for details of their service in order to configure the handset
accordingly.
Press key for 1 a long time in standby mode.
You can check the following submenus.
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