The demo video solely provides us a glimpse of the entrance of the machine, and the display seems to wrap across the cellphone, rolling up from the underside edge. Not less than so far as prototypes go, this idea seems to be on the “operational” facet of the spectrum — there are at the very least battery and mobile indicator icons on display. The rolling show is a versatile OLED panel, measuring 6.5 inches when prolonged and retracting all the way down to “simply over” 4 inches.