https://www.theverge.com/2017/9/15/16304302/iphone-8-x-wireless-charger-buying-guide-how-to-choose

One of the biggest changes in Apple’s new iPhones is the long-awaited addition of wireless charging. Wireless charging has been around for years at this point, which has left time for a large ecosystem of accessories to build up.

So, if you’re an iPhone user, you’ll probably want some kind of wireless charger to use with your new phone. Fortunately, Apple is using a wireless charging standard, called Qi, that nearly every other company in the industry has adopted (instead of making its own weird proprietary format), so getting a wireless charger for your iPhone 8 or iPhone X is actually pretty easy and pretty cheap.