There are a few ways to open rar files on Android. The first way is to use the File Manager. To open the File Manager, tap on the three lines in the top left corner of the screen and select “File Manager.” From here, you can browse and select files by name or by their size. The second way is to use a file manager app. There are many file managers available for Android, but some of our favorites include FileZilla, Fenix 3D, and ADB sideloader. To use a file manager app, tap on the three lines in the top left corner of the screen and select “File Manager.” From here, you can browse and select files by name or by their size.