Multi-screen interactive use method:
Connect the device and the TV/STB to the same WLAN. If you use a box/TV that supports Miracast function, you need to manually turn on Miracast function on box 1 TV:
2. you can drop down the notification bar or go to settings > device connection (assistant), which will realize multi-screen interaction:
3. There are multi-screen interactive portals in the playing interfaces of galleries, music and videos. When a device is available, you can click to finish the screen projection.