Managing files on a Windows Phone 8.1 device in 2026 is an "enthusiast" task, as the official . You can no longer simply open the Store on your phone and search for "Files" to download it.
To get a file manager now, you must an application package (XAP or APPX file) from a PC or use a community-driven alternative store. 1. Best File Managers for Windows Phone 8.1 download file manager for windows phone 8.1
Since you cannot browse the live store, you will need to find the offline installation files (XAPs) for these specific apps on archive sites like the Internet Archive or community repositories. Managing files on a Windows Phone 8