To customise the themes 'Footer' settings, from the store dashboard go to:
> Store Settings > Theme Options > Newsletter

From within this page the top tick box labelled 'Show menus on mobile' will either enable or disable the footer on mobile.
The 'Legals' and 'Icons' can be altered to how you see fit and will affect this part of the footer:

(*Don't forget to click 'Save Changes' after making alterations*)