With the front being nothing but the screen there are no buttons anywhere. That means it's not super easy to quickly turn on the phone without reaching to the side for the power button. Thankfully, OnePlus added several useful gesture controls and swipes.
Yes, you can control your phone with hand and finger gestures like Tony Stark. Head to Settings > Buttons > Navigation Bar & Gestures > Nav Gestures > and give it a try. Or just look in Advanced Features.
For one, you can double-tap the screen to instantly wake it up, which is amazingly useful. Or, ditch the buttons for gesture navigation similar to what we're seeing from Apple's iPhone Xs or the Pixel 3 XL. Try drawing letters on the screen (even when it's turned off) to instantly launch the camera, open apps, or complete other tasks.
It's basically one more way to do things on the phone and do them quickly. Control your music, launch the camera and more. We like how gestures remove the on-screen keys, giving users the entire 6.67-inch screen to enjoy.