As concerns over global warming rise, the topic of recycling and renewable energy sources are commonly in the news and social media. This brought back memories of a phone that encapsulated both - the Samsung S7550 Blue Earth. The most distinctive feature of the phone was the solar panel on its back. It was a cool look and more importantly, it had a practical application - an hour in the sun charged the battery enough for a 10 minute phone call (on a 3G network) or two extra hours of standby. The solar panel was integrated into the back cover and connected to the phone using pogo pins....