Full screen mode help

[Carrie Greicar]

When trying to watch a video on full screen, my navigation bar doesn't go away. Is there a way to hide it? It's the 10+

 

[Hermes Hidayat]

When trying to watch a video on full screen, my navigation bar doesn't go away. Is there a way to hide it? It's the 10+

Go to settings. Display, Full Screen Apps. And choose the app and change it from Auto to Full Screen.