Deleting a file through the USB connection from Windows actually does work - if you wait long enough. Try copying everything first, then disconnecting the phone.Run My Files and delete the files. That should delete them in less than a second each. (You can long-press a file, then tap a lot more [even all of them], then delete [I think My files uses a trash can at the top for delete].)
I don't know how you'd delete a file if you don't know it's there, though. You have to find the files - in Windows or in My files, it makes no difference.
The problem is deleting via USB - I don't know whether that's a Samsung problem or a USB problem, but files just don't seem to delete that way unless you go do something else for a long time. Deleting them in My Files (or Total Commander or ES File Explorer or ...) deletes them immediately. (I suspect that they actually get deleted via USB, but Windows Explorer isn't getting updated very quickly. I never cared enough to do an engineering-type study to see what the actual problem is, though, since using an installed app is just as easy.)
02-28-2018 03:34 PM