Within the Drag and Drop and Contentbox editors you have the ability to reorder the page content when viewed on mobile.
With Drag-drop you can use either the dedicated Mobile Popup window, or the Style Editor to reorder your row or column content.
With the Contentbox editor launching the Section Settings popup - Section blocks with more than one Section Column can be reordered via the Mobile Settings area.
The option will only be available if more than one Section Column in the Section.