How do I secure my phone?

To set up a screen lock, follow these steps:

1. From the main screen, press the OK key.
2. Using the navigation keys, go to the "Settings" icon. Then, press the OK key.
3. Go to "Privacy & Security."
4. "Screen lock" will be highlighted. Press the OK key.
5. Go to "On." Then, press the OK key.
6. Use the dial pad to enter a 4-digit PIN. Then, press the OK key.
7. Enter the passcode again to confirm. Then, press the key below "Create."