reading view
In reading view on iPhone and iPad, you can view, scroll, and interact with text and objects in a spreadsheet without accidentally moving objects or bringing up the keyboard. Reading view minimizes the controls to just what you need to view the content and perform basic tasks. You can quickly switch to editing view, then switch back to reading view.
Do any of the following to switch between reading view and editing view:
Switch to editing view: Tap at the top of the screen.
Switch from editing to reading view: Tap in the top-right corner of the screen. On iPhone models with a small screen, or on some iPad models in split view, tap at the top of the screen, then tap Reading View.