You can block a friend from sending you messages. When blocked, your friend will be removed from your Friends list.
From the Friends list, touch and hold the friend’s name. If you don’t see the friend, touch the Menu Key > All friends .
Touch Block friend in the Context menu that opens.
You can view a list of your blocked friends by opening your Friends list and touching the OK in the dialog box that opens.
. You can unblock a friend by touching the friend’s name in the blocked list then touching