Fullscreen button (feature)?

Hi, Is there any solution to force fullscreen in any apps? On different devices they have a button on the navigation bar that when is pressed, it will hide the navigation bar. Is it possible on Razer Phone or do Razer have any app or feature to enable this function? Because it is really weird when i turn on for example Dolby Atmos, play the demo and the video is smaller because of the navigation bar. Thank you for replay.