Let me tell you the meaning of the things in the MIUI folder: cache, the location where files are stored after back up system backup, browser files, and gadgets. There are two subfolders under clock and photo frame. Photo frame, music system player folder, photo is the avatar folder, ringtone folder, screen cap folder where screenshots were stored before, theme folder, and wallpaper. Understanding the MIUI folder is very helpful for playing with the MIUI system. For example, if you download a few text message ringtones and want to set them into your phone, of course you can do it in the custom theme and choose to choose through other programs, only music , and the general text message prompt tone is only a few tens of kilobytes, and the player ignores it by default, so you still need to adjust the scanning of the player, and there are many steps.