The latest version of mobile phone Android system is 9.0. Compared with Android 8.0, Android 9.0 doesn't have much function adjustment, but some bugs of Android 8.0 have been fixed and the UI has been slightly adjusted. Adding more colors to various options of the system makes the whole system more dynamic ~ ~ The latest version of mobile phone Android system is 9.0. Compared with Android 8.0, there are not many functional adjustments, but some bugs of Android 8.0 have been fixed, and some minor adjustments have been made in the UI, adding more colors to various options of the system and making the whole system more dynamic ~ ~ ~