This Battery-Free Cellphone Works by Harvesting Power From Ambient Radio Signals

If there’s a bottleneck in today’s smartphones and mobile devices generally, it’s battery life – or, rather, the lack of it – but a new innovation from researchers in the US could mean an end to constantly staring at that sad-looking little red…

Source: www.sciencealert.com/this-battery-free-cellphone-works-by-harvesting-power-from-ambient-radio-signals