1. From the home screen, press the Right Soft key.
   
2. Scroll to the Settings, then press the Center Nav key.
   
3. Scroll to the Phone Settings, then press the Center Nav key.
   
4. Scroll to the Security, then press the Center Nav key.
   
5. Scroll to the Phone Lock, then press the Center Nav key.
   
6. Scroll to the desired option, then press the Center Nav key.
   Note: For the purposes of this guide we will choose When Power On.
   
7. Enter the desired security code, the press the Center Nav key.
   Note: The default code is 0000.