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Kyocera's solar smartphone concept is a hot idea (pictures)

The Japanese handset-maker shows off its bright ideas for solar-powered and extremely durable phones at MWC.

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Lynn La
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1 of 7 Sarah Tew/CNET

The long roadmap for Kyocera

BARCELONA -- At MWC this year, Kyocera showed off some of its early prototype and concept devices, some of which help users survive emergency and extreme situations, while others have innovative power sources.

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Solar charging built-in

One such idea was a phone with a 0.6mm-thick solar film embedded in the back of the handset's display, so you can charge your device when the sun is shining.

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When you need that extra boost

The solar capability is meant as a supplemental charging method, instead of a primary one.

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Still needs work

Due to its current inefficiencies, however -- the model requires 2 hours of charging to give you an extra 5 minutes of talk time -- Kyocera won't be ready to release a working solar-charging handset until it can boost its performance.

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5 of 7 Sarah Tew/CNET

Central core platform

Another idea the company envisioned was a line of durable handsets that you can customize according to your needs. All phones will have a rugged "core" platform, that can then have different degrees of ruggedness.

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Consumer-friendly option

One option is slightly rugged, thin, and still consumer friendly.

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7 of 7 Sarah Tew/CNET

Extreme rugged option

Others include a very rugged model that can survive cold temperatures and has an extra antenna. Another is this extremely rugged phone, with dual speakers and bumpers that protect the corners.

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