Galaxy S9/S9+: How to control the Samsung DeX screen with a device?

You can use your device's features in an interface environment similar to a computer.
You can launch the device's app or check the device’s notifications and status.

Some apps or features may not be available when using Samsung DeX mode.

Samsung DeX mode supports HD+, FHD, and WQHD resolutions, Some content on your device may be displayed differently on the TV or monitor.

If the TV or monitor do not support HDCP (High-bandwidth Digital Content Protection), the Samsung DeX mode screen may not be displayed.

Download the firmware from the server to update Samsung DeX mode to the latest version.
It is available only when connected to a Wi-Fi network.

Some apps may become paid apps depending on their license policies when you use Samsung DeX mode.

Favorite apps: Add frequently used apps to the Home screen and launch them quickly.

Apps button: View or launch apps installed on your device.

Taskbar: View the apps that are currently running.

Status bar: View your device’s status or notifications, The display icons may differ depending on your device's current status. Select the arrow icon and turn on and off your device's various features on the quick settings list.

Quick access toolbar: Use the on-screen keyboard, volume, screenshot, and finder features quickly.