Clamshell
A term used to describe a cell phone that has a fold in the center that allows the phone to open and close. When open the user has access to the keypad and can view the LCD. When close it is compact and allows for easy storage.
In the picture to the right, is a Motorola
Quantico phone and an example of what a clamshell cell phone looks
like closed (left) and open (right).
Also see: Cell phone, Cell phone definitions