Re: how to find a file on a galaxy s4
Welcome to Android Central! Open the App Drawer, and tap Downloads. Most downloaded files will be here. However, certain files won't be seen in this Downloads app, depending on which app you used to download the file. If you don't see the file, use a file manager (like the stock My Files in Samsung devices, or a 3rd party app like ES File Explorer) to look in the Downloads folder.
To make matters more confusing, certain apps download things to their own specific folder. For example, if you download a photo from Facebook, it gets stored in a folder called /storage/sdcard0/com.facebook.katana/fb_temp/