Microsoft testing phone screen mirroring feature in Windows 10

Windows 10 users running Insider Preview build 18356 (19H1) now have the ability to mirror their Android phone screens on desktop. — Microsoft

Some users in the Windows Insider Programme now have the ability to mirror their Android phone screen on their desktop via the Your Phone app. 

The feature requires that the PC has support for Bluetooth with Low energy Peripheral mode in order to connect to phones, more details on how to check if a PC supports this feature can be found on this Microsoft community forum post.