It is bonkers that, in Files, "scan" is not an icon but is invisible on a black/white folder page and you have to magically know to hold your finger down on a blank spot to scan a multipage document!!
I wasted two hours stupidly thinking I could scan a multipage document into Notes and export it as a PDF. Nope. Notes is useless for this despite using the same scanning engine in the OS.
Instead, you have open Files, make a new folder, hold down your finger, choose scan, but immediately turn off Auto scan (super buggy), so you scan manually. Then, page by page finish it. Then save the multi pages you just scanned as one PDF to that folder. Even then, I am not entirely sure how I share the link to that folder via email to the person who needs to read the document!
If this was just an icon, in any iOS program (Notes, Files, whatever) which mean “scan one or more pages and safe it”, it sure would be way better!
And here I am, iPhone user since 8 years and I never knew that scanning documents is an integrated feature. I always use an app for that 🥺
From my perspective, once you use the Notes app to make a PDF you go right back to your third-party app.