The Phone Lock feature, helps prevent unauthorized use of the device by disabling outbound data and voice calls. The device will still be able to receive phone calls and place emergency calls to 9-1-1.
From the main screen, navigate: MENU > Settings & Tools > Phone Settings.
Utilize the 5-way navigation pad to highlight and the center/OK button to select.
If prompted, press OK.
Enter the Phone Lock Code.
The default phone lock code is the last 4-digits of the mobile number.