An integrated device provides functionality of both a PDA and cellular telephone. Features include a power button offering control of both the computing and telephony functions of the device; a lid that turns the device on and off and controls additional telephony functions; a jog rocker that activates the device and is used to select from a variety of menu options; application buttons that offer direct access to applications stored on the device, and which can be configured to operate in conjunction with secondary keys to offer added functionality; a keyboard that enables data input into the device; an automatic word completion function that verifies and corrects a user's typing in real time; and a simplified keyboard navigation system that allows the navigation of menus using keyboard shortcuts.