https://www.theverge.com/2018/7/20/17596072/iphone-x-gestures-android-phone

The best feature of Apple’s iPhone X isn’t its hardware or design; it’s the extremely fun, easy-to-use, and efficient gesture-based navigation system that replaces the old home button. Apple’s use of gestures in the iPhone X has spurred a renaissance in gesture UIs, and many companies are now developing their own takes on them. OnePlus has added a gesture-based control option to its popular enthusiast-focused phones, while Motorola and Huawei have developed systems that work with the fingerprint scanner on the front of their respective devices. Even Google will get into the game with its version of gesture controls when Android P officially launches in a few months.

While many phones are coming with their own gesture systems, if you want your Android phone to mimic the iPhone X’s system as closely as possible, you can do it with a couple of apps that are available in the Google Play Store, some trial-and-error tinkering, and just a little bit of command-line action.