The live stream officially works only on the Mac, iOS devices and more recently Windows 10. However, you can use the following workaround to watch Apple’s September 12 iPhone X Event live stream on older Windows or even on an Android device:
Download VLC, the VideoLan media player.
Windows users can download the VLC app from this link.
Android users can download the Android app from this link.
Launch the VLC app.
Navigate to the ‘Media’ tab and select ‘Open Network Stream’.