Blocking Calls From A Specific Number:
Touch the "Phone" icon located on the home screen
Press the "Menu" key
Gryphon "Frames Call"> "Reject Call"
Gryphon "Auto reject mode"> "The car refuses numbers"
Press the "Back" button and tap "Add Automatic Rejection"
Touch the "+" icon then "Create"
Enter phone number to add to the list of "Blocked Calls"
Optionally, select "Matching Criteria" and choose "Exactly the same as" (to block the exact number), "It starts with" (to block phone calls from a certain area, etc.)
Tap "Save"
Unlocking a Key:
From the home screen, I tap the "Phone" icon
Press the "Menu" button
Gryphon "Frames Call"> "Reject Call"
Grifo "The car refuses to list" touch "trash" icon
Mark the check box associated with the number you want to unlock
Tap "Delete" and press "Delete" a second time to confirm