A design company called Alloy Total Product Design has unveiled a mobile phone concept called the Polygon that uses 2 screens. The phone flips open like many flip phones but rather than the usual keypad and screen, you will find one large screen capable of resolution high enough to be suitable for watching video and a second one with lower resolution but supporting touchscreen capabilities. The advantage of a touchscreen instead of a keypad is that the layout can be changed depending on the application.
Now, we wait to see if a manufacturer decides to pick up this concept!