Why can't the Mi Home APP on my phone discover the device?

If you are using a Huawei mobile phone, please select "Trust this app" in the mobile phone settings - permission management - Mi Home APP - set a single permission; and pull down the phone screen to enable the "Location Information" function, or go to Settings - Advanced Settings -Location Services Turn on "Access My Location". For other mobile phones, please consult the mobile phone manufacturer on how to enable location information. If the region information of the Mi Home APP is outside the mainland region, it is recommended to log out of the Mi Home account and select the mainland region when logging in again.