One Note is a great way to add and manage your notes across multiple devices. The One Note.Badge which is available on smartphones is used to quickly add a note from the home screen.
It sits at the edge of the screen. But for some of us thus might seem quite bothersome because it might interfere with our navigation or the keyboard. Well it can be removed quite easily. One would have to press on the Icon until you see a cross mark on the screen. Then drag the icon to the cross mark and it gets deleted.