Speed Dial - Samsung Galaxy S® III

From a home screen, select Phone (located in the lower-left).
If not available, navigate Apps > Phone.
Select Menu.
Select Speed dial setting.

Add a speed dial
Remove a speed dial

Add a speed dial

Select an unassigned speed dial entry (e.g. 2, 3, 4, etc.)
Select the desired contact.

Remove a speed dial

Select and hold an assigned speed dial entry (e.g. 2, 3, 4, etc.)
Select Remove.