To give you a truly in-depth experience on Infinity Display phones like the Galaxy Note 9, S9 and S8, Samsung added the ability to hide the navigation bar when not in use and then easily reveal it with a swipe-up gesture for quick access . If you've always found this process a little too cumbersome, Samsung has introduced a smooth feature in a user interface that makes it much more intuitive.
With Android 9.0 Pie-based update, you now have the option of completely ditching the navigation buttons for the benefit of new gestures. This completely removes the bottom field for even more screen properties. While the setting is a little hidden, it is still incredibly easy to activate and get used to.
To try the new feature, open the Settings app to start, then press "Display" and select the "Navigation bar" on the following page. From there, tap "Full screen gestures" to activate the function and you are completely busy.
Compared to the traditional navigation bar, the new gesture-based navigation tabs are much less intrusive and the controls themselves are a lot more fluid. You no longer need to sweep up to reveal the navigation bar, and then press a button. Instead, you can now swivel up from the area where the buttons used to be ̵