Across the pond at CEATEC 2008 in Japan, NTT DoCoMo presented the "Separate Keitai" prototype--a phone that can be separated in two, literally. The display and the keyboard parts of the phone in question could are actually connected by a mere magnet (that I hope is powerful enough to not accidentally separate the parts while inside the bag, etc.).

The phone takes on the usual keitai clamshell factor, but just like a Transformer bot, it could be reattached as a horizontal clamshell or even a gamepad (vertical display, horizontal keyboard). The touch screen could even be designed to show different displays depending on its orientation. Other possibilities for the design exist, such as using the display part as an MP3 player while using the keyboard part to make calls. Another would be using a different type of display for the keyboard part such as a wristband type display that could be useful during jogs or hikes.

Cell phone manufacturer Fujitsu exhibited a similar prototype as well (check the pic after the jump). DoCoMo's Separate Keitai is only a concept model for now and there is currently no schedule for release (or even plans for one) anytime in the near future.