Microsoft has added beta support Android app screen mirroring in Windows 10 Build 1803 or newer for the latest Insider builds. At the moment the feature is only compatible with a limited number of devices but it will be supported by all smartphones running Android version 7.0 or later. Microsoft previously demoed the Windows 10 Your Phone app during October 2018 at the company s Surface event. Users who want to test the feature with the Phone Screen feature also have to have a computer which comes with support for Bluetooth with Low Energy Peripheral mode.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-testing-android-screen-mirroring-on-windows-10-pcs/