Microsoft published a “Files” app to the Marketplace around the end of May that is compatible with Windows Phone 8.1 only. The Files app enhances the phone’s functionality by providing the phone with File Explorer type access to user files.
I finally got some time to spend exploring all the goodness that the Files app brings to the phone. As you can see from the screenshot below, we can now access the various types of files we store on a phone in a way that is similar to a File Explorer. Instead of opening up the Office Hub to browse and share the Excel, PowerPoint, Word and other files that are stored there, we can find them via the Files app in the Documents folder; Music and audio files are stored in the Music folder, Photos and Videos are stored in the Pictures folder, etc. The Files app also gives us access to a Downloads folder and a Ringtones folder.