The Nokia Communicator is a brand name for a series of business-optimized mobile phones marketed by Nokia Corporation, all of which appear as normal phones on the outside, and open in clamshell format to access a QWERTY keyboard and an LCD screen nearly the size of the device footprint.

A clamshell design is a kind of form factor for electronic devices in the shape of a clamshell. Mobile phones, handheld game consoles, and especially laptops, are often designed like clamshells. Clamshell devices are usually made of two sections connected by a hinge, each section containing either a flat panel display or an alphanumeric keyboard/keypad, which can fold into contact together like a bivalve shell.