From the home screen, tap Phone. Note: 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.
Under the Keypad tab, tap the Menu icon.
Tap Call rejection.
Tap Auto reject mode.
Tap the desired option.
Tap Auto reject list.
Tap the Add icon to add a new number or contact to the reject list. Note: To quickly add a phone number or contact to the call reject list, tap and hold a call log, and then select Add to reject list.
Tap the Delete icon to delete an existing number or contact from the call reject list.