The battery-free phone runs on ambient light and RF signals, though it’s not enough to power your favorite game.

Batteries: You can’t live with them, you can’t live without them, and I recite that cliche because I know you’re nodding along with me right now. Smartphone battery packs have become bigger so that they last longer, and a majority have been infused with fast charging technology. But a dead battery remains a major pain point, especially since  [Read More…]