Microsoft announced its latest mobile device, the Windows Mobile oPhone, at web design conference Mix last week.

Microsoft says:

"A breakthrough new technology device to compete with Apple's iPhone, the oPhone is a fold out variable device with three different usable surfaces and a circular display."

"The oPhone, in standard mode, is a thin, curvy device topped by a round screen and with the phone keypad surface below. Two other surfaces, the same size and shape as the keypad, can be flipped out. One has a full keyboard, the other a music player control with a wheel control and a few buttons. Flip out all three surfaces, and you have a device shaped like a three winged boomerang, and Microsoft claims it is aerodynamic enough to work exactly like that."