1. BLOCK MESSAGES: From the home screen, press the Call/Accept button to access the call log.
   
2. Press the down directional button to scroll to the desired phone number, then press the Options button.
   
3. Press the down directional button to scroll to Block number, then press the Select button.
   
4. Press the right directional button to highlight BLOCK, then press the Select button.
   Note: Alternately, from the home screen press the App tray button > left directional button to highlight the Phone app > Select button > Options button > down directional button to scroll to Call settings > Select button > down directional button to scroll to Call blocking > Select button > Options button > Select button to select Add a number > enter the desired number > directional buttons to navigate to BLOCK > Select button.
   
5. UNBLOCK MESSAGES: From the call log, press the down directional button to scroll to the desired phone number then press the Options button.
   
6. Press the down directional button to scroll to Unblock number, then press the Select button.
   
7. Press the right directional button to highlight UNBLOCK, then press the Select button.
   Note: Alternately, from the Contacts screen, press Options and select Blocked numbers > press Options and select either Add a number or Unblock.