Apple launched iOS 11 with so many features including redesigned control center, new files app, and so on. And along with that, it added one major feature: ARKit.
With ARKit, developer are able to create great Augmented Reality apps and games for devices running iOS 11. One of the best example of Augmented Reality is Pokemon GO. It was a huge hit and AR became more popular on mobile devices since then.
AR apps and games works on the Apple A9, A10, and A11 processors including iPhone SE, iPhone 6s, iPhone 6s Plus, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, 9.7 inch iPad Pro, 10.5 inch iPad Pro, 12.9 inch iPad Pro (both generations), and the 2017 5th Gen iPad running iOS 11 or later.