Nokia Aeon

The concept phone, dubbed Aeon, combines two touch-sensitive panels mounted on a fuel-cell power pack. The handset's connectivity and electronics are built into the panels to allow them to be used independendently. When assembled, one panel would operate as the display, the other as the keypad. Since the buttons are entirely virtual, Aeon can flip instantly between a numeric pad for dialling, a text-entry pad for messaging, or a media-player controller.