Why does my Xiaomi mobile phone always have a security warning?

It may be that some applications in your system interfere with the normal operation of the system, especially some programs that get root permission. For the security of the mobile phone system, please don't use root permission at will.

It is recommended that you back up your data, enter recovery to clear all data (turn off the phone, press and hold the volume up+power on button to enter recovery), upgrade your mobile phone to the newly developed system with a wire brush, and temporarily do not install the application that requires root permission to see if it can be restored to normal.

Xiaomi mobile phone brushing tutorial:/thread-3104435-1-1.html.