Allow users to minimize the ribbon in the Android version of OneNote
While the ribbon is useful, it would be optimal to allow us to minimize it when it is not needed, such as for long periods of text entry. I like to have my onscreen keyboard be fairly large, and with the size of the keyboard and the ribbon, the actual screen space of what I'm entering is quite small. It would be much easier if the ribbon could be minimized that way there would be more screen space for your text entry.
I use my Bluetooth keyboard when working in onenote. Your right about screen space not much room.
Isidro Manuel Suárez Prieto commented
Or just hide akind full screen mode im OneNote 2016. It takes almost one fith!.