■ Lock code security settings
Your device has a security option allowing you to lock your phone with a code. 
When the code is set and turned on, no outgoing calls are allowed and the menu 
cannot be accessed without entering the correct code first. This prevents 
unauthorized outgoing calls or access to any information stored on your device.
The
Security
option is in the
Settings
menu. The first time you access the Security
option, you must enter a lock code. The default lock code may vary depending on 
your wireless service provider. The preset lock code may be the last four digits of 
your phone number, 1234 or 0000. If none of these work, contact your wireless 
service provider for help.
You must enter the lock code to access the following
Security
option:
1. In the standby mode, select
Menu
>
Settings
>
Security
.
2. Enter the lock code, and select
OK
. See "Change lock code," p. 68.