Quick post on a solar powered phone from Sharp, available through KDDI AU and Softbank Mobile in Japan, meaning there are both CDMA and UMTS versions. (Coverage by Wireless Watch Japan of a review by Nikkei Tech-On.)
I got to see this phone (not use it, though) during a trip to Japan last month. I do wonder how much time a cellphone (at least one in urban Tokyo) spends directly in sunlight, unless you place it near a window. Nonetheless, snazzy; feel-good; takes advantage of Sharp’s capability to integrate components from its business units; and likely apt for overseas markets.