How do I connect my Note9 to a screen using DeX?

Last Update Date : 2018-09-04

Samsung DeX allows you to use your smartphone like a computer by connecting your mobile device to an external display, such as a TV or monitor.

Please note: Use only official Samsung DeX supported accessories to avoid performance problems and malfunctions due to third party applications.

You can connect your smartphone to an external display in three ways.

DeX CableClick to Expand

The DeX Cable is the easiest way to connect your Note9 to a screen, as it is through the use of a single cable.

DeX Cable
1 Connect the cable to your Note9.
2 Connect the other end of the cable to your TV or monitor.

Two options will appear on your screen:

Start Samsung DeX: The mobile device’s screen will turn off and appear on the connected TV or monitor in desktop mode. Use your device as a pad to control what happens in the screen.

Samsung DeX touchpad

Switch to screen mirroring: The content of your Note9 will be mirrored on the connected screen.

Samsung DeX screen mirror
HDMI adapter (USB Type-C to HDMI)Click to Expand

You can also connect your Note9 to an external screen using an HDMI adapter or a multi-port adapter.

USB Type C - HDMI adapter
USB – HDMI multi-port adapter
1 Connect your Note9 to the adapter.
2 Connect the adapter to your TV or monitor.

Two options will appear on your screen:

Start Samsung DeX: The mobile device’s screen will turn off and appear on the connected TV or monitor in desktop mode. Use your device as a pad to control what happens in the screen.

Samsung DeX touchpad

Switch to screen mirroring: The content of your Note9 will be mirrored on the connected screen.

Samsung DeX screen mirror
DeX PadClick to Expand
1 Connect the DeX Pad to a power point.
2 Connect one end of the HDMI cable to the DeX Pad’s HDMI port, and plug the other end of the cable into a TV or monitor’s HDMI port.
Connect HDMI cable to the DeX Pad
3 Connect your smartphone to the mobile device connector (USB Type-C) on the DeX Pad.
Connect mobile to the DeX Pad

Please note: Ensure that your smartphone is horizontally inserted to the connector. Otherwise, the DeX Pad and your smartphone may be damaged.

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