It's truly frustrating that there's no delete button on the photo / video preview screen. The only way I know if it's an image I want to keep or delete is to view it in larger form, not as a thumbnail!! Having to page back from preview to thumbnail -- and hoping I still have correct image checked in thumbnail -- simply to delete a file is time consuming and frustrating. I've seen that others have suggested this as far back as 2017, and you've chosen to ignore this very logical and necessary function. If you refuse to offer this function, I'd love to know the rationale.