Huawei NEXUS 6P User Manual page 12

Change how your screen displays what's on the screen when you rotate your screen. This option won't show up if
you've disabled "Auto-rotate screen" in accessibility settings.

Cast screen
To connect your device to Chromecast, touch the Cast screen icon

Ambient display
Set up your device to show lock screen content when the device is picked up. This settings is only available on some
devices.
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