I have phones running Android..
When I connect either one to my computer, and click "internal shared storage", I only see DCIM and Pictures..
But if I go to any decent file manager app on the phone then it shows far more folders within "internal shared storage" e.g. Download, and other folders.
One of my phones, comes with what looks like a nice app for backing up, and it creates a folder with the backup, and I want to copy that folder to my computer. But I cant see how to access that folder to copy it onto my computer!
I'd be a little bit surprised if this is a situation where the phone has to be rooted to do it.. I do plan to, but this is an app that the phone comes with. So some may backup the phone before unlocking the bootloader.