Self-Charging Phones Are On The Way
Sure, wireless charging is neat, but what if your smartphone could recharge without a power outlet?
The case that Will Zell slides onto his iPhone doesn't look that unusual, but it's doing something pretty out of the ordinary: capturing some of the radio waves that the phone transmits when connecting to cell-phone towers and Wi-Fi routers, converting them to electricity, and feeding that power back to the phone's battery.
