In Japan's telco KDDI and their partner Sharp already announced about a cellphone that can be powered by solar energy. KDDI claims that if you place the phone under the sun for 10 minutes, you will get two hours of standby, or a minute or so of talk time.
The Solar Powered Handphone really a pro-environment invention. It uses a reusable energy such as solar to powered it. The device has a built-in solar panel that can be used to absorbed the energy from the sun. The advantage of the Handphone is that you don't need to bring with you a charger and much more a solar charger. Just bring with you the Solar Powered Handphone and your good to go. Isn't that very portable and sleek, indeed?!