The document scanner is tucked away in the Notes app on iPhone and iPad. You'll have a scanned document ready to mark up, covert to PDF, and share with another app.
Launch the Notes app on your iPhone or iPad.
Create a New Note.
Tap the More button just above the keyboard. It looks like a plus (+) symbol.
Tap Scan Document from the list of options.
Line up the document you want to scan.
If the scanner doesn't automatically scan, tap the shutter button to manually scan the document.
Repeat the step above for each page you want to scan for a single document.
Tap Save when you've scanned all of the pages you want to include with one document.
The scanned pages will populate in a new note in the Notes app.