ZTE of China just unveiled the world’s first low-cost cell solar powered cell phone. The Coral-200-Solar uses a small solar panel on the back of the phone to receive its energy.

Charge time to talk time is 4:1 with it taking one hour in the sun to get enough juice for 15 minutes of conversation.

ZTE general manager, Wang Yong Zhong, spoke to reporters at a trade show yesterday saying that, “We estimate in the world there are more than two billion people who have limited or no access to electricity.”

In partnership with the emerging network operator Digicel, the Coral-200-Solar will launch first in Papua New Guinea, Samoa and Haiti where ZTE expects to sell approximately 300,000 in the first year.

This comes amidst several similar announcements for other solar powered cell phones. Phones like Samsung’s Blue Earth are marking a serious trend in the proliferation of solar powered gadgets.