In depth: Why it's still worth investing in wireless charging for your phone

A wireless futureA few years ago it seemed that wireless charging was the next big thing. The idea was simple: you'd put your phone on the bedside cabinet and it would recharge, no searching for and fumbling around with cables required. But for some reason it hasn't become mainstream yet – once again, the predicted uptake in a new technology has stalled, despite Samsung's top-end S6 and S7 models allowing you to charge off any wireless base station.However, wireless charging is still only