There are quite a few solar-powered phones out there, but this Kyocera-made prototype offering is particularly intriguing and promising and makes for an impressive effort.
This particular smartphone product was made as part of a collaboration with Sunpartner Technologies, a company based in France that specializes on solar technology. Accordingly, this particular phone uses solar power to run its functioning. Three minutes of exposure to the sun will guarantee you one minute of talk time. This is a significant improvement on the previous Kyocera prototype, which needed 10 minutes of light rays to generate two minutes of voice. The phone also comes with a companion app that lets you stay updated on the device's charging situation.
This solar-powered phone is truly an innovative product, and a fine example of the kind of audacious and out-of-the-box thinking that the phone industry needs to become more eco-friendly.