Fujitsu displayed an interesting advanced concept phone at CEATEC that can be pulled apart and reconfigured to set it to what function you want.

This cool concept phone lets you to separate your screen and touchscreen keypad in whatever configuration you like. you can split your mobile in two parts,  the screen and keyboard, The screen module contains software functions, including video recording and games, while the keyboard is responsible for communication tasks, such as 3G and radio. Both parts can be used separately or stuck together by magnets, and where you stick the screen on the keypad determines what the touchscreen shows.

The communication between two parts is done by Bluetooth. And of course you’ll be able to use both parts separately, to listen to music, to watch video

There is no news yet if this cool concept phone will find its way into reality but it will surely be great if it can. I, for one, will be hoping that this great device goes into reality and hope to see it on the shelves someday.