I do use a foldable keyboard when I need to write more. But for random note capture the onscreen keyboard works well. Termux can be configured to display C M s

I do use a foldable keyboard when I need to write more. But for random note capture the onscreen keyboard works well. Termux can be configured to display C M shift. It might sound cumbersome but you quickly develop a muscle memory for it. Add to that the richness of emacs+org commands and it becomes faster than, say, Evernote.