Find Where Do Downloaded Files Go On iPhone, Know Here
1. Depending on which device you’re using, touch “On My iPhone” or “On My iPad” after selecting the “Browse” link at the bottom.
2. The list under "Locations" changes according to the applications you've installed, but "On My [Device]" is always present.
3. You'll notice a list of folders that varies for every app. Tap "Downloads," where most people save files.
4. A list of all the downloaded files You can download files to a folder other than "Downloads." If you can't find the file, tap another folder after hitting the back arrow.
5. Tap a file to preview it, or hold it to bring up a pop-up menu. Move, copy, or rename the file.
6. Simply shut down the Files app when you’re finished. The file you’re looking for will still be there when you open Files the following time.