This Samsung DeX guide explains the details of the Samsung DeX, shows you how to use Samsung DeX, answers questions you may have on it.
This guide applies to Samsung Galaxy S10, Galaxy S10+, Galaxy S9, Galaxy S9+, Galaxy S8, Galaxy S8+, Galaxy Note 8, Galaxy Note 9, and Galaxy Note 10, although most of the screenshots were taken from Galaxy S9.
Galaxy Note 10 added the DeX for PC. You can use the DeX screen on your PC or laptop with a USB cable. This feature is currently only available on Galaxy Note 10 and Galaxy Note 10+. Please check this guide on how to use DeX for PC.
We will update this page once DeX for PC is enabled on other Samsung devices.
Update 1: Samsung DeX for PC is now also available on Galaxy S10 (including S10+, and S10e) after the September update as explained on this page.
What is Samsung DeX? What do you need to use Samsung DeX?
For Galaxy S and Galaxy Note phones, it is always easy to connect to external monitor or TVs using a micro USB MHL adapter (for Galaxy S or Note devices prior to Galaxy Note 7 with a micro USB port), or a USB C to HDMI cable (for Galaxy S or Note devices with a USB type C port like Galaxy S8, Galaxy S8+, Galaxy Note 8, Galaxy S9, Galaxy S9+ and Galaxy Note 9).
In addition to MHL support, Samsung also incorporated Micracast support in most in these devices. In recent versions of Galaxy S and Note devices, the Miracast support is limited to Samsung’s implementation only.
So, for Galaxy S9 and S9+, you can use at least the following three methods to mirror the phone screen to a TV or external monitor:
- Use a USB-C to HDMI cable (like the official Samsung USBC to HDMI cable).
- Use Miracast to cast the screen to a Samsung TV or monitor through