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.
Tap the Menu icon.
Tap Call rejection.
Tap Auto reject list.
To add a number to the blocked calls list, tap the Add icon.
Enter the desired number, then tap SAVE to add the entered number to the block list.
To remove a number from the Auto reject list, touch and hold the desired number.