ModeLabs unveils 'green' cellphone concepts

French designers ModeLabs this afternoon said it had developed three of the first truly energy- and environment-friendly cellphone concepts. All the concepts rely on the inherent movement of their users to automatically regenerate power and signal the possibility of using smaller batteries or even eliminating them entirely. The most advanced model is the YoYo (pictured), ModeLabs says. Worn about the neck, the prototype recycles the bounces and swings created by its owner and also draws power from built-in solar cells.

Alongside this flagship model, the company has also revealed the U-Turn, a business phone which can draw energy from opening and closing its keyboard, and the Runaway, a wrist-mounted phone for athletes that takes advantage of the faster movement of exercise as its main power source. ModeLabs has not said whether or not its concepts will reach production but hopes to market its custom designs to cellphone makers soon. Photos of all three phones can be seen after the jump.