When saving a file to device on Android phone, the app shows the last used folder with no hint where that folder is. I suggest to add a path on top or the bottom of the screen or as a continuation to the location (for example SD/....) so the user knows where the file will be saved.
If one uses the chevron on top or the three line menu on left, the last location will be lost and one must choose from the file browser.
If by mistake the file browser was not used and the save button was pressed, you will never find that file. I did that and still the search produces no results, even if I allow the hidden files to show. Most probably it was saved in a place where the search can not reach.
Without the path, the only thing you see is the message "Saving on SD". But where?