I think the fact this made it to the front page shows how many were unaware of the scanner in the files app. I have multiple times looked into ways to scan on iPhone and have only found the Notes app, which is kinda klunky, and Microsoft Lens.
Pressing and holding the Files icon on the iOS home screen allows you to directly access the scanning feature.
Pretty handy! I didn’t know this feature existed, and the scanner app I had been using stopped working a couple months ago and I haven’t been able to find a replacement that I was happy with.
On the latest iOS update, searching for the Files app also returns a shortcut to the scanner. Weirdly, searching for "scan" or similar doesn't return it... The icon is similar in design to the control centre so you'd think it could be added there, but again, it's unavailable...