Phone could be as flexible as you want it to be. Right now it is a prototype which costs $7000 but by the time we are ready to buy it, $100 looks more like it. Arizona university researchers have come up with a paper phone which is a touch screen phone and works like a touch screen phone. It is ultra thin, looks more like a ration card and less like a phone. In addition to the touch input the phone will take inputs while you bend. The phone looks rugged and looks ideal for some tough handling. Paper phone uses 9.5 cm flexible film eInk display which has copper wires clung on back of it. It can make calls, play music and store books. (Source: This phone can bend it like Beckham!.) See the video:
Future is here!