We see XIOMI phoneSs MIUI, so we dicuss about what is MIUI.MI User Interface, abbreviated MIUI (Me You).Android is an operating system (OS), the original Android OS is the OS which we see on Google devices such as Nexus or Pixel or on Android One phones such as Nokia or Motorola.MIUI is a custom ROM or in other words it is an modified version of Android OS whose functions are same as Android OS but its user interface (UI) is different from the original Android OS, we only see the MIUI OS on Mi or Xiaomi devicesNo company other than Mi or Xiaomi uses MIUI but Android OS is used by many companies, even the Mi or Xiaomi uses Android OS in his Android One series phones

Xiaomi has released various smartphones, all but Mi A1, Mi A2 and Mi A2 lite of which come pre-installed with a complete version of MIUI. Xiaomi devices usually get one Android version update, but get MIUI updates for four years.This has made various apps and features not available in the aftermarket version of MIUI, but available only through rooting.The original MIUI ROMs were based on the Android 2.2.x Froyo and was initially developed in the Chinese language by Chinese startup Xiaomi Tech.Xiaomi added a number of apps to enhance the basic framework; those include Notes, Backup, Music, and Gallery.MIUI used to be translated and ported into unofficial versions in other languages by independent developers and groups of fansites.

omparison of all MIUI variants