Since the arrival of touchscreen smartphones, smartphone vendors have been experimenting with touch gestures to replace physical buttons. WebOS, Ubuntu Touch, and MeeGo have all used touch gestures in the past, and last year, Apple adopted touch gestures in iOS to replace the home button on the iPhone X. In the Android world, we are starting to see the adoption of touch gestures on a larger scale, with companies like Huawei and Xiaomi all aboard the bandwagon.