What Is Samsung DeX and How Does It Work

Not to be missed, the final menu at the far right gives you quick access to a virtual keyboard, volume settings, screen capture, a search bar and your calendar (just click the date). For complete access to all of your mobile phone’s settings, you can also open the regular Settings app in DeX mode.

Samsung dex

Push the boundaries of your Galaxy
with Samsung DeX

Your device is more capable than you know. Text your friends, watch a movie on the big screen,
and get ready for your big presentation – all with a Galaxy device assisted by DeX.
The perfect tool for multitasking is now available with wireless connection.

DeX goes wireless

Versatile and hassle-free. You can now use DeX’s features minus any wires for connection.
Simply connect to a Smart TV and cast your contents on the big screen without cluttering your work environment.

* Samsung DeX wireless connection is supported with TVs that support Android smart phone screen mirroring(Miracast) only.
*There may be a difference in performance depending on TV’s specifications and WiFi environment. Recommended to use Samsung Smart TVs launched after ’19.
*To check which Galaxy device models offer wireless connection with DeX, please visit the FAQ page.

Make presentations
a breeze

In charge of big project? DeX can help you give a seamless presentation. Simply press the ‘DeX’ button on your Galaxy, connect to the Smart TV in the meeting room and knock it out of the park.

Do double duty
at home

Launch DeX on your phone and connect to a nearby TV to watch a movie on a big screen, or create a virtual classroom for the kids. Meanwhile, you can still get your own work done on the phone, including checking emails, or even taking a note with S pen.

Your input is invaluable

Use your Galaxy phone as a touchpad with intuitive multi-finger gestures and customizable functions, or as an on-screen keyboard with a larger display.

Looks like a tablet, acts like a PC

Productivity has never been so mobile

Full PC-like productivity in a slim tablet with Samsung DeX. Simply tapping DeX button on the Quick panel for features that let you use your tablet just like a PC.
Open several windows at once, drag and drop a photo into an email, and right-click for more functions.

* Only supported on some Galaxy Tab models such as the Galaxy Tab S4, S5e, S6, S7, etc.

PC like experience with a single tap

With the Book Cover Keyboard, getting things done is that much easier. Coming with a larger trackpad and intuitive function keys,
the keyboard gives you a seamless experience, and when used together with DeX you get a PC-like experience with a single tap.

*Book Cover Keyboard sold separately
*Function Key only applied on certain models

What Is Samsung DeX and How Does It Work?

Molly K. McLaughlin has been a technology editor and writer for over a dozen years. She runs product reviews for Lifewire, overseeing the process from hands-on testing to publishing.

Updated on October 24, 2021
Reviewed by

Western Governors University

Ryan Perian is a certified IT specialist who holds numerous IT certifications and has 12+ years’ experience working in the IT industry support and management positions.

What Is Samsung DeX?

Dex extends the Android Multi-Window or split-screen mode, allowing you to multitask easily between apps, tools, and devices. In DeX mode, you can see your full list of apps, access an on-screen keyboard, search for apps and items, and access and edit your phone’s photos and files. You can also reply to text messages and take calls.

DeX is not a full-fledged desktop replacement. It’s a companion that is slower and less dynamic than a traditional desktop environment. For example, you can’t open multiple Google Docs or Sheets at the same time like you can on a laptop or desktop. This may pose a problem for some people, such as writers, analysts, and financial professionals. DeX is also limited to the use of mobile apps, which may have less functionality than desktop apps, and there are no browser extensions like ad-blockers or password managers.

Here’s how to set up Samsung DeX and what you can do with it.

How to Run Samsung DeX on the Galaxy Note 9 and Galaxy Tab S4

If you have a Galaxy Note 9 smartphone, it comes with Samsung DeX software installed. All you need is a USB-to-HDMI adapter and a monitor that has an HDMI input. Plug the cable into the smartphone and monitor to start the setup automatically.

After connecting your devices, a welcome screen appears on the display. Select Start Samsung DeX. Navigate through tips, review the terms of service, then select Start. When DeX starts, you can use your phone as if it were a desktop computer.

You can also use your smartphone as you normally would while using the external display for a presentation, demo, or other activity. This is a boon for business travelers who can save a presentation or video to their phone and then project it to a display in a conference room or other business setting. You can also watch videos from Netflix or other streaming services on a separate screen.

The Galaxy Tab S4 tablet also has a built-in DeX mode, and you can easily switch between regular and DeX mode. You can use DeX mode on a tablet screen or by connecting it to a monitor using the USB-to-HDMI adapter from Samsung.

What Is the DeX Pad?

Samsung DeX Pad turns a Galaxy S9, S9+, or later into a touchpad while also charging a smartphone. When connected, you get similar functionality as you would using the adapter cable, including access to apps, images, and documents on a larger screen. The touchpad functionality supports scrolling, clicking (single and double-tap), and pinch-to-zoom.

The DeX Pad has an HDMI Out port, two USB 2.0 ports, and one USB Type-C port.

What Is the DeX Station?

The DeX Station adds more functionality, including Ethernet connectivity for accessing networked files and the ability to use a phone camera for video chatting.

Like the DeX Pad, the Station charges a Samsung phone. It’s also lightweight and easy to transport. The DeX Station has an adjustable connector so you can get a good angle on your smartphone screen.

In DeX mode, you’ll see the smartphone screen on the external display. You can use Screen Mirroring, which means the phone and monitor display the same screen. To navigate in DeX mode, connect a USB or Bluetooth mouse. In Screen Mirroring mode, you can use your phone as a touchpad. In either mode, you can use an external keyboard or the virtual keyboard built into DeX.

Should You Get DeX?

The concept of DeX is interesting. This could be a growing category as phones become more powerful and workplaces more mobile. At this point, DeX is a good bet for business people who travel around giving presentations or video demonstrations, and are tired of wasting time trying to share their screen while participants watch with their eyes glazed. If you work at a desk all day, you may be better off with a traditional computer, at least for now.

The Beginner’s Guide to Samsung DeX

Samsung DeX promises to usher in a new era of mobile-powered desktop computing. Here’s a guide to understanding what DeX is, how it works, how it can replace your other computing devices and what benefits it can bring to you or your company.

What is Samsung DeX?

Samsung DeX is not hardware — it’s a platform that extends your smartphone into a desktop computing experience. It runs on all of Samsung’s flagship smartphones introduced since 2017, including the Galaxy S8/S8+, Note8, S9/S9+, Note9, S10e, S10, S10+, Note10 and Note10+. DeX is also available on Samsung’s Galaxy Tab S4, Tab S5e and Tab S6, where it can be used directly on the tablet’s screen with the keyboard case or on a connected monitor with an external keyboard and mouse.

In the initial iteration of Samsung DeX launched in early 2017, a docking accessory called the DeX Station was required to connect your smartphone to your monitor, keyboard and mouse. In early 2018, the DeX Pad was launched, which allowed users to use their phone as a touchpad in DeX mode, while still serving as a dock with USB, HDMI and USB-C ports. With the launch of the Note9 in August 2018, Samsung introduced the DeX HDMI adapter, cable and multiport adapter, eliminating the need for the previous docking accessories.

Once connected to a monitor via one of these adapters, the Samsung DeX platform boots up quickly on the monitor, presenting the user with a familiar desktop experience complete with resizable windows, drag-and-drop functionality and keyboard shortcuts.

In August 2019, Samsung introduced DeX for PC. This enables users to connect their Note10 or Note10+ to a compatible Windows PC or Mac to access DeX right from their computer.

Read on for more tips on navigating the DeX interface — but first, here’s a review of the pros and cons of the three accessories.

Which DeX adapter is best?

The three available Samsung DeX adapters offer different advantages depending on where and how you use the platform.

Compact and pocketable, the DeX HDMI adapter allows you to easily connect your phone to a standard HDMI cable on your monitor. Since there are no additional ports to connect a USB keyboard and mouse, you’ll instead need to use Bluetooth peripherals. For longer DeX work sessions, rely on wireless charging to keep your battery topped up.

The DeX cable is like the standard HDMI adapter but is 1.4 meters long, and plugs right into your monitor. It’s ideal if you plan to use DeX primarily in one location and can leave the cable connected to your monitor. It’s typically used in corporate hot-desking scenarios, where users drop by, connect their phone to the cable and get to work.

With a full range of ports, the DeX multiport adapter offers the most flexibility in using DeX. In addition to the HDMI port to connect to your monitor’s HDMI cable, you have a USB 3.0 port to connect a keyboard or mouse, a Gigabit Ethernet port for wired internet, and a USB-C port to connect your phone’s charging cable. The multiport adapter is also compact and easily pocketable.

How to set up Samsung DeX

Once you have your preferred adapter or cable, follow these steps to connect your Galaxy smartphone and start using DeX:

1. If you’re using the DeX cable, connect it to your monitor’s HDMI port. If you’re using the HDMI or multiport adapter, just connect the adapter to your monitor’s standard HDMI cable.

2. Connect your keyboard and mouse. If you’re using the DeX cable or HDMI adapter, you’ll be pairing a Bluetooth keyboard and mouse. On your phone, turn on Bluetooth and scan for your peripherals; then follow the manufacturer’s instructions (which often involve holding down a Bluetooth button to make the device visible to your phone). If you have the multiport adapter, you have the option of connecting via USB 3.0.

3. If you are using the multiport adapter, you can also connect your phone’s charging cable to the adapter’s USB-C port and your Ethernet cable to the internet jack.

4. Connect your smartphone to the adapter by way of your phone’s USB-C port. You should see the Samsung DeX logo appear on your monitor as it quickly boots up.

Using DeX with your PC

The classic, original version of DeX is all about powering a desktop experience without your PC. The new DeX for PC application available on the Note10 now lets you use DeX with your laptop.

To use DeX for PC, no additional adapter is required as you’ll simply use your smartphone’s USB-C charging cable to connect to your PC. You will, however, need to first install the DeX for PC application on your compatible Windows or Mac laptop. Once you’ve installed the app and connected your phone, DeX will boot automatically. You can view DeX for PC either in full screen mode or as a floating window alongside your laptop applications.

While the classic DeX is great for users who want to ditch their laptop and use just their phone, DeX for PC is about bringing together both devices on a single screen. While working on your laptop, you’ll be able to quickly access all your mobile notifications and messages, and even take calls. You can also transfer files and photos with an easy drag and drop.

Tips for getting started with Samsung DeX

Adjusting your display settings: When you first boot up DeX, you’ll be prompted to check that the desktop is correctly displaying on your monitor or TV. If the corners of the DeX desktop do not fit properly within the display, you’ll need to go into the settings menu of your monitor or TV to adjust the scaling. This is particularly common on TVs where the picture may be set to a certain aspect ratio. Select the “fit to screen” option and you should be all set.

Screen mirroring versus DeX mode: In your phone’s notifications menu, you’ll see several new options after connecting to your monitor, including the choice to move between screen mirroring and DeX mode. As its name indicates, screen mirroring will simply mirror what’s on your phone screen to the monitor. Screen mirroring is useful in some circumstances, but DeX gives you a much different, completely optimized desktop computing experience for productivity work on a larger screen. Tap the notification to go into DeX mode.

Use your phone as a touchpad: Also in the notifications menu on your phone, you’ll see the option to use your phone as a touchpad. After selecting this, you’ll be able to use your finger or an S Pen to navigate within DeX. This is great if you don’t have a mouse handy and want to open an app, Powerpoint or video, especially if you’re using DeX in a presentation setting. When using DeX on a tablet, you can also use your screen as a graphics pad to sketch and draw.

Launch and maximize your mobile apps: All of Samsung’s core applications are optimized for DeX, meaning you can resize and maximize the apps. You can also use right-click functionality and keyboard shortcuts. There are dozens of third-party apps that are fully optimized for DeX, including the Microsoft Office suite, Adobe Acrobat Reader, Photoshop Lightroom, Photoshop Sketch, Gmail, Chrome, BlueJeans, GoToMeeting and all the leading VDI clients, to name just a few. For those that aren’t optimized for DeX, read on for the next tip.

Activate DeX Labs: DeX Labs offers access to “experimental” features that aren’t officially supported. Two current features include allowing DeX to force apps to resize and auto-open the last used app. To activate, click the DeX logo on the bottom right of your screen, open DeX Labs and toggle the features on. Now, when you open an app that is not DeX optimized, you’ll be given the opportunity to force resizing. This will allow you to view it in a larger window or even in fully maximized view.

Getting to know the DeX interface

Samsung DeX is intuitive and an easy learning curve for most Galaxy smartphone users, but here are a few tips to help you become familiar with the interface. We’ll start from the bottom left and run through the various on-screen menus.

Lock or Exit DeX: Tap the DeX logo at the bottom right corner if you want to lock DeX while you leave your desk for a moment. You can also exit DeX mode here or switch to screen mirroring.

Apps Tray: Next to the DeX logo at the bottom left of the interface, the apps tray icon (the grid with nine dots) gives you access to all of the apps on your phone. They’ll be arranged just as you see them on your phone. You can browse between screens or use the search bar to find what you’re looking for.

Recent, Home and Back: The other three icons in the bar at the bottom-right of your screen will be familiar. They are the same recent, home and back icons you’ll see at the bottom of your phone’s screen, and give you a quick way to hop between apps and get back to your desktop. You can also use the shortcuts to your currently opened apps that appear just to the right of this menu.

Notifications Menu: You also have easy access to your phone’s notifications menu in DeX mode — it’s the left-most of the three menu bars on the right side of your screen. Just tap the three dots to expand the menu to see all your notifications.

Quick Settings Menu: Next up is the Quick Settings menu (the one you normally access by swiping down from the top of your phone). Here you can see your battery life, alarms and Wi-Fi and cellular connectivity. Hit the delta symbol to expand the menu and adjust your settings.

Not to be missed, the final menu at the far right gives you quick access to a virtual keyboard, volume settings, screen capture, a search bar and your calendar (just click the date). For complete access to all of your mobile phone’s settings, you can also open the regular Settings app in DeX mode.

Can DeX replace your PC?

Today’s smartphones offer enough computing power to complete most work tasks, but the limitations of smaller screens can make it difficult to multitask or do heavier productivity work. Using Samsung DeX with a full-size monitor, keyboard and mouse makes it possible to ditch the laptop or desktop PC for good.

For individuals, DeX is a great way to work more flexibly. Instead of booting up your laptop to catch up on work at home, just connect your phone to a monitor and get straight to work. You can run up to five apps at once and easily get most tasks done without hassle.

For business owners and IT decision makers, DeX allows you to consolidate your IT investment and device management. By using a smartphone as their primary computing device, your team will have access to corporate email and apps — instantly accessible, wherever they are. Rather than having a dedicated PC for each employee, you can deploy flexible workstations using a DeX cable, Bluetooth keyboard and mouse, knowing that users can drop in and start working within seconds.

Even businesses that are reliant on legacy Windows applications that don’t have mobile or web versions should consider DeX as an option. You can leverage a virtual desktop app like VMware or Citrix within DeX to access a full Windows desktop.

What benefits can DeX bring my company?

Having one piece of tech that connects everything brings a wide range of benefits for both the employee and the business.

For the employee, it means using a single device, knowing how to instantly access all the information they need without having to navigate multiple OS platforms or remember to share projects and data from one device to another. It also means the employee can personalize the device to their needs, making it much more efficient than using multiple devices.

For the small or midsize business, there is the obvious benefit of reducing costs by decreasing the number of PCs and laptops you have to buy. But beyond those upfront savings, giving employees the flexibility to work means businesses can expect improved efficiency, communication and productivity.

Using DeX also brings security benefits. Samsung smartphones are protected by advanced biometric security and Samsung Knox, our defense-grade security platform that’s designed from the chip up to protect devices from the minute they’re powered on — so you can be sure your information is safe. With Knox, you’re given powerful tools to manage company devices and enable your own security protocols, including containerization and application allowlisting and blocklisting.

Mobile computing is already transforming productivity across many industries, and SMBs will want to get on board sooner rather than later. Samsung DeX provides a ready-made, out-of-the-box solution, with powerful security protections built in.

Learn how to increase your productivity even more with Dual Mode for DeX in this short video. Then download this free guide to taking your company mobile-only with Samsung DeX.