Microsoft Your Phone app on Windows 10 has been updated for those in the Windows Insider Program.
With the latest Insider update, Microsoft is enabling multi device support for the application.
In simple terms, users on Windows 10 can now add/link additional (Android) devices to the Your Phone app.
If you are a Windows Insider and have the latest update for Your Phone, you should see the new “Add a device” button in your app settings, from where you can follow the setup instructions.