Keypads
These are most common in older mobile devices, although some smartphones have a keypad and a touchscreen, such as the Blackberry. There are three configurations: numeric, alphanumeric, and directional. Following is a figure of the Blackberry Bold, a smartphone featuring all three configurations and that is also equipped with a touchscreen. (This screenshot has been taken from http://us.blackberry.com/smartphones/blackberry-bold.html?lid=us:bb:devices:blackberrybold&lpos=us:bb:devices#!family=Bold.)