Top left, with the controls: the name of the app the PDF came from, the way an iPhone shows it.
01 · Going back
- Tap the page to show the controls, then tap ‹ Files, ‹ Gmail or whatever app opened the PDF. You are back in that app, where you left it.
- When the name of the app is not known, the button says ‹ Back.
- The phone’s own back gesture does the same.
02 · A PDF you picked here
- A PDF opened with Open a PDF on the start screen goes back to the start screen.
- With text selected, back clears the selection first.