1. To enable call blocking, from the home screen, tap the Phone tile.
   
2. Tap the Menu icon.
   
3. Tap blocked calls.
   
4. Tap accept.
   
5. Tap the Back key.
   
6. To block a number, touch and hold the desired call entry.
   
7. Tap block number.
   
8. Tap ok.
   
9. To unblock a number, tap the Menu icon.
   
10. Tap blocked calls.
    
11. Tap blocked numbers.
    
12. Touch and hold the desired number.
    
13. Tap unblock.