1. To block a number, from the Start screen, select the Messaging tile.
   
2. Select and hold the Message thread you want to block.
   
3. Select Block number.
   
4. Select Block.
   
5. To view a list of blocked numbers, from the messaging threads, select the menu icon.
   
6. Select Blocked messages.
   
7. Select the menu icon.
   
8. Select Block list.
   
9. Your blocked numbers list will be displayed.
   
10. To add a number to the Block list, select the add icon.
    
11. Enter the Desired phone number then select Block.
    
12. To unblock a number, select and hold the Desired number.
    
13. Select Unblock number.
    
14. The number is now unblocked.