Samsung SWC-R640LBAXAR - Manual (Page 167)

Changing Your Settings 162
Edit Code
This option allows you to set lock codes for your phone and/or for
calls and services on your phone.
Tip: The default lock code for your phone is generally the last four digits of your
phone number.
1. In Standby mode, tap Menu ➔ Settings ➔ Phone settings ➔
Security.
2. Enter your four-digit security code.
3. Tap Edit Code.
4. Follow the prompts to change the lock code.
Note: Your phone does not allow you to view a lock code for obvious security
reasons. If you change a lock code, be sure to write down or memorize the
new code.
Restrictions
Restrictions let you restrict the use of your phone for outgoing calls,
incoming calls, and access to your Contacts.
1. In Standby mode, tap Menu ➔ Settings ➔ Phone settings ➔
Security.
2. Enter your four-digit security code.