https://www.theguardian.com/technology/2017/sep/13/apple-iphone-8-iphone-x-what-is-wireless-charging-do-i-need-it

Apple’s iPhone 8 and iPhone X come with wireless charging, so there’s no need to reach for a cable any more. How does it work, what supports it and is it any faster?

The new iPhone X and iPhone 8 support wireless charging for the first time in an Apple smartphone – but what is it, how does it work and is it worth using?