On 25th Anniversary of Nokia Research Center, the Nokia GEM concept phone was presented. Ultimate customizable device.
The whole phone is entirely made of touchscreen, which makes the phone completely adaptable to whatever task is at hand. GEM changes it`s functionalities, depends on what are you doing at the moment. For example if you use Navigation, on one side of the display/phone you`ll see the whole map, when on the other side it will be specific location where are you at the moment.
Rather than having a phone with a camera app, the phone can become a camera essentially because the entire phone can have new functions appear on any facet.
See the video to see how this concept could be used!