neat, the Snapseed "silhouette" filter is actually quite good at cleaning up black-and-white "scans" from programs like Office Lens

in general I'm impressed how well my phone camera works as a scanner, even though I ended up having to do the conversion to a greyscale print-ready file myself in Krita (more because I'm a perfectionist though)

My brother sent me a scan from his iPhone SE using the Notes app and the text is so soft, Apple why

I wonder if scanners will slowly disappear now that we can literally just point phones at paper and get a decent quality document

@gamehawk scanning apps already do keystoning automatically (and adjust contrast)

you do need to provide decent and uniform lighting, that's still better on a scanner