1. TURN ON/OFF CALL BLOCKING: From the home screen, press the OK button. Press the directional buttons to navigate to and highlight the Settings app, then press the OK button.
   
2. Press the left and right directional buttons to navigate to the Network & Connectivity tab, then navigate to and select Call Settings.
   
3. Navigate to and select Call Barring, then navigate to and select All.
   Note: You have the option to enable or disable call barring for both incoming and outgoing calls.
   
4. Select Enable or Disable as desired.
   Note: You will be prompted to enter a passcode if you select enable. The call blocking feature may not affect phone calls made or received via third-party apps installed on your device. Please contact third party app developers for assistance with such applications.