Install for Dockless DeX
Before the Galaxy Note 9 arrived, you could only access Samsung's DeX desktop-style UI using an expensive dock. That's changed.
Galaxy Note 9 users get DeX's desktop experience with an HDMI to USB Type-C cable and a monitor. This allows them to control the action on screen with a bluetooth mouse and keyboard.
Thanks to Android Pie, Galaxy S8 users now get the same experience. You no longer need to use, or buy, an expensive DeX station in order to get a desktop experience.
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Not everyone needs this, but it's extremely useful for Galaxy S8 users that want a full screen experience while doing work or another activity.