1. From the home screen, tap Phone.
   
2. Press the Menu key.
   
3. Tap Call settings.
   
4. Tap Call rejection.
   
5. Tap Auto reject list.
   
6. Tap the Add icon.
   
7. Enter the desired phone number to block.
   
8. Tap Save.
   Note: Tap 'Match criteria' to adjust the match criteria. You can set area codes or number prefixes to be blocked as a group.
   
9. To remove blocked numbers, first tap the Trash icon.
   
10. Tap the desired blocked numbers.
    
11. Tap Delete.