Huawei Mate 9 - Manual (Page 76)

Mirroring your screen to a display device
Mirror your phone's screen to an external display to play games and view files on a larger
screen.
1
Swipe down from the status bar to open the notification panel. Touch .
On some phones, the icon is hidden. Touch to expand or find it on the
Settings > Smart assistance screen.
2
Select a display device (or TV dongle) from the list. Your phone's screen will be mirrored to
this device.
You may need to enable Miracast on some display devices (or TV dongles) for your
phone to detect them. For instructions on how to enable Miracast, please see the manual
for your display device.
Network and Sharing
70