For iOS/macOS devices:
1. Select the "Apps" category
2. Find and select "Wireless Projection"
3. Follow the on-screen instructions
4. Connect to the same Wi-Fi network
5. Cast/mirror your iOS device via AirPlay
For Android devices:
1. Stay on the ATV Home Screen
2. Select “Settings”
3. Connect to the same Wi-Fi network
4. Download the Google Home app from the Google Play Store
5. Cast/mirror your Android device by selecting "Settings/Connected Devices/Connection Preferences/Cast/
Select your Device"
6. Complete casting
For more details, please refer to the link: https://www.benq.com/en-us/knowledge-center/knowledge/how-to-start-benq-smart-home-projector.html