Yoyo phone powered by sun and movement

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The Yoyo concept mobile phone from ModeLabs uses kinetic and solar energy

The Yoyo phone is the latest mobile concept design to wow environmentally-concerned mobile phone users.

Aside from its eminently stylish looks, the Yoyo concept is designed to power itself using solar and kinetic energy. The novel (if text-message unfriendly) keypad of the Yoyo is ranged around its edge, with a display in the centre.

According to a piece by phone technology blog Intomobile , the Yoyo phone - designed by ModeLabs - uses photovoltaic cells (which convert light into energy). It's also powered by a pendulum circular movement and has retractable headphones that trigger a pendulum motion. An idea that's worth giving a spin, perhaps?