21. Device according to claim 18 , wherein the input device is a navigation input device allowing the control of a cursor on the display, in particular a rocker-key, joystick, or direction keys.
21. Device according to claim 18 , wherein the input device is a navigation input device allowing the control of a cursor on the display, in particular a rocker-key, joystick, or direction keys. 29. Device according to claim 21 , wherein left/right and up/down buttons of the navigation input device are used to move the cursor on the display.