FileMaster can help you optimize your phone with powerful junk files cleaner, phone booster, app manager, CPU cooler and file transfer. FileMaster is a device manager and optimization tool that has installed by over 10 million users. Key features: ★ File CleanerMake your phone clean is our top priority. We have several features to help you improve your device. No more bust and freeze. ✔ Clean cache trash – clear system cache and apps’ cache junk files to reclaim the space. ✔ Clean apps' installation package – clean the installation apk of apps ✔ Clean uninstall remains-clean residual junk file from deleted apps; ★ 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 optimized search engine of file explorer will find file in internal storage and SD card in 1 second. And users can browse files by category, e.g. image, music, video, apps, etc. ★ CPU Cooler Cooling the CPU heat by detect and close apps that are likely to cause temperature rise. ★ Speed Booster No more auto-start application in the backend. Phone Master boosts processing speed, clean unnecessary apps that running in background and save battery. ★ Security & Antivirus Scan installed apps, memory card content and new apps automatically. Safe Security’s latest protection technologies against viruses, adware, malware,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. ★ Battery Saver The battery saver can analyze battery usage and monitor all apps that drain power while not in use. Hibernating the apps to stop battery draining and promote battery life. ★ 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 exploits 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.