Huawei P20 User Manual page 100

Desktop experience: Enjoy a desktop experience with Android apps. Open multiple windows,
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manage files, search your Phone, or change the desktop wallpaper. You can also connect a mouse,
keyboard, and other peripherals.
Connecting your Phone to an External Display
Use a dongle-type adapter to connect your Phone to an external display, or a dock-type adapter to
connect your Phone to a display, keyboard, and mouse simultaneously.
Dongle-type adapters: USB Type-C to HDMI adapters are supported. If the external display has an
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HDMI port, use a USB Type-C to HDMI adapter to connect your Phone to the external display.
Dock-type adapters: USB Type-C to HDMI/USB/USB adapters are supported. If the external display
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has an HDMI port, but you also want to connect a mouse and keyboard to your Phone, use a USB
Type-C to HDMI/USB/USB adapter.
Alternatively, use a USB Type-C to DisplayPort/HDMI cable to directly connect your device to the
external display.
Device Connection
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