FileMaster can help you manager your phone files with powerful app manager, and file transfer. 
FileMaster is a device manager and tool that has installed by over 100 million users.

Key features:
★ Smart Library File Explorer Categorize all files into Downloads from internet, Bluetooth from nearby devices, Images, Videos, Music, Documents (pdf, xls, ppt etc), Archives (zip, rar etc) and APK. 
★ File Search The search engine of file explorer will find file in internal storage and SD card. And users can browse files by category, e.g. image, music, video, apps, etc.
★ Root Explorer For advanced users to explore, edit, copy, paste and delete files in the root partition of phone storage for development purposes. Explore root folders of the system like data, cache. 
★ Chromecast File Manager You can use it to play local media on to your chromecast device like, Google Home, Android TV or other devices.
★ App Lock Keep your privacy by locking FileMaster with built-in app lock. You can enter FileMaster by fingerprint, password or pattern, which depends on your device.
★ WiFi Share With build-in wifi file transfer, this free file manager and explorer wifi & hotspot to transfer files to another phone and PC even without internet connection. Without limitation for file size and type, users can transfer any file including apps, video, music, picture, etc. extremely fast.
★ PermissionWe will use the MANAGE_EXTERNAL_STORAGE permission to access the files on the device to ensure proper use of the file manager function.

A functional file explorer and manager app.

FileMaster: Manager

Additional Information