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, navigate: Menu > Settings & Tools > Phone Settings.
If prompted, tap OK.
Enter the Phone Lock Code then tap DONE.
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: