Often labeled as Android 9.1 or 10.0 (though frequently "faked" and actually running Android 6 or 8 underneath).
While many units display "Android 10" or higher in the system information, they often run on a modified Android 8.1 or 9.0 base for compatibility and performance reasons. yt9216bj_00012_v001
Here is a breakdown of what each part probably means: Often labeled as Android 9
