Full screen mode

Without full screen mode, you can see a system bar at the top of the screen after you tap on the file to hide all the other elements:

To turn on Full screen mode, go to Settings:

Tapping on the Full Screen Mode to turn it on:

After the full screen mode turned on, you can see the system bar on top is gone:

Please note that full screen mode is supported for devices running Android Kitkat (4.4) and up.

Feedback and Knowledge Base