The Phone Lock feature helps prevent unauthorized use of the device by disabling outbound data and making calls. The device can still receive calls and place emergency 911 calls.
From the main screen, select Menu.
Utilize the 5-way navigation pad to highlight and the center button to select.
Select Settings .
Select Phone settings.
Select Screen lock.
Enter the Phone Lock Code.
Select Confirm lock code.
Screen locks automatically. You are prompted to put in your lock code to access your phone. To enter your lock code, press the right soft key then enter your lock code.
To disable this option, refer to Unlock the Device - LG Exalt LTE.