The Phone Lock feature helps prevent unauthorized use of the device by disabling user initiated outbound data and the ability to make calls. The device is still able to receive calls and place emergency 911 calls.
From the main screen, select Menu.
Utilize the 5-way navigation pad to highlight then press the center/OK button to select.
Select Settings & Tools..
Select Phone Settings.
Enter the Phone Lock Code then select OK.
Default lock code is the last 4 digits of the mobile number.
Select one of the following:
Lock Phone Now
Locks the phone immediately.
Phone Lock Setting
If selected, choose one of the following: