In T387175, work is being done to refine the UI to improve discoverability of full page editing on mobile. However, the present approaches being explored there do not involve surfacing any of the content from other sections.
As a user editing on mobile, being able to see information from other sections might help me to (a) realize that switching to full-page editing is an option, and (b) reduce my need to switch to full-page editing by surfacing the contextual information I need from other sections to make the edit I am trying to make in a single section.
Possible approaches including showing section headings in an accordion (similar to the present mobile reading experience) and showing fading text of the sections immediately above/below the section being edited, similar to the UI used on many news websites:
