Go mobile-only with Samsung DeX

Your comprehensive guide to rolling out a mobile-only solution for your workers.


The beginner’s guide to Samsung DeX

Samsung DeX promises to usher in a new era of mobile-powered desktop computing, allowing you to transform your phone into a killer PC. The best part: It’s free. The DeX platform is built into the software of many of the latest Samsung Galaxy mobile devices, so all you need to get started using DeX are a monitor, HDMI adapter and peripherals. And with the Galaxy S21, S21+ and S21 Ultra 5G, you can now use DeX wirelessly on most Smart TVs and other displays that support Miracast.

If you’re new to DeX, here’s a guide to help you understand what it is, how it works and the benefits it can bring to you and your business.

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What is Samsung DeX and what devices does it run on?

Samsung DeX is not hardware — it’s a software platform that extends your smartphone or tablet 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+, Note10/10+, S20/S20+/S20 Ultra , Note20/Note20 Ultra, the Galaxy Fold and Galaxy Z Fold2, and now the newly announced S21 lineup. DeX is also available on Samsung’s Galaxy Tab S4, Tab S5e, Tab S6, Tab S7 and the rugged Tab Active Pro, where it can be used directly on the tablet screen with a 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 (DeX Station or DeX Pad) was required to power the experience and connect peripherals. 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 mobile device to a compatible Windows PC or Mac to access DeX right from their computer. With DeX for PC enabled, users can easily transfer files between devices or pivot between mobile and desktop applications.

With the launch of the Note20, wireless DeX was unveiled. This allows users to use DeX without a cable on Smart TVs featuring Miracast, as long as both devices are connected to the same Wi-Fi network.

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

Which DeX adapter is best?

Samsung offers several accessories and cables that can be used for Samsung DeX and Samsung DeX on PC. Each cable and adapter offers different advantages depending on where and how you use the platform.

Best Samsung DeX cables and accessoriesThe DeX cable allows you to easily connect your phone to a standard HDMI port on your monitor. It’s 1.4 meters long, so you’ve got flexibility to work with just about any monitor setup. The DeX cable is ideal if you plan to use DeX primarily in one location and can leave the cable connected to your monitor. It’s often used in corporate hot-desking scenarios, where users drop by, connect their phone to the cable and get to work. 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, use wireless charging to keep your battery topped up.

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, and a USB-C port to connect your phone’s charging cable. The multiport adapter is also compact and easily pocketable.

A USB-C to USB-C cable is a great option if you have a USB-C monitor. One end connects to your phone and the other directly into the monitor. The other advantage of USB-C cables and monitors is that your monitor can act as a hub to connect your wired keyboard and mouse. It can also keep your phone charged while using DeX. You can also use a USB-C to USB-C cable for DeX on PC if you have a newer laptop that has USB-C ports.

The other option for wired DeX on PC is a regular USB-C to USB-A charging cable. You likely already have one for charging your phone. Just detach the USB cable from the wall charger and connect it into the USB port on your PC or Mac.

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How to set up your workstation for Samsung DeX

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

  1. If you’re using the DeX cable, plug it in to your monitor’s HDMI port. Those using a multiport adapter can just connect a standard HDMI cable from their monitor into the adapter.
  2. 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.
  3. Connect or pair your keyboard and mouse. If you’re using the DeX cable, 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 keyboard or mouse “visible” to your phone). If you have the multiport adapter, you have the option of connecting via USB 3.0. You can also choose to use your phone as a touchpad instead of connecting a mouse; see more on that below.
  4. If you are using the multiport adapter, you can also connect your phone’s charging cable to the adapter’s USB-C port. Those using the DeX cable can keep their phone charged by placing it on a wireless charger while using DeX.

A comic depicting a first-generation mobile docking station

Using DeX wirelessly on your smart TV or monitor

With its latest devices, including the S21, Samsung has introduced the ability to use DeX wirelessly.

Wireless DeX works on most Smart TVs featuring Miracast, though Samsung Smart TVs released in 2019 or after provide the best experience. Samsung has also launched a Smart Monitor featuring Miracast, which is ideal for creating a wireless DeX workstation.

To use wireless DeX, first go into screen mirroring mode on your TV or monitor. Then, on your smartphone or tablet, pull down the quick panel menu and tap DeX. Now select the TV or monitor you want to cast to.

Wireless DeX on TV is a true second screen experience — you can keep using your phone as a phone while it powers the DeX interface on your TV. It’s ideal for sharing content like PowerPoint presentations or videos, but you can also connect a keyboard and mouse and use the TV as a monitor for productivity work.

Wireless DeX is now supported on a wide range of Samsung mobile devices, including the Galaxy S10, Note10, S20 and Note20 lines, as well as the Tab S7. Support for wireless DeX depends on which Android update your device is on.

Using DeX with your PC or Mac

The classic, original version of DeX is all about powering a desktop experience without your PC. However, the DeX for PC application 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 can also connect to your PC wirelessly, as described above, if your PC supports Miracast.

You will, however, need to first install the DeX for PC application on your compatible Windows 10 or Mac laptop. Once you’ve installed the app and connected your phone, DeX will boot automatically. You can view DeX for PC 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 to and from your phone with an easy drag and drop.

DeX on PC is supported on many of the latest Galaxy phones and tablets, including the Note10, S20, Note20, S21/S21+/S21 Ultra 5G and Tab S7.

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 virtual desktop infrastructure (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 App tray icon 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 or tablet users, but here are a few tips to help you become familiar with the interface.

Apps tray: At the bottom of your screen on the far left is the Apps tray icon (the grid with nine dots). Click on it and you’ll find all your apps 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.

Lock or exit DeX: When you tap the App tray icon, you’ll also see a menu with several other options. You can lock DeX, in case you need to leave your desk for a moment. You can also exit DeX mode here or switch to screen mirroring.

Recent, home and back: The other three icons in the bar at the bottom-left 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.

Volume and audio output: To the right of the toolbar, you’ll find the volume settings. Click the icon to adjust your levels. You’ll also be given the option to change the audio output. You can have audio play through your phone or through the connected display, if it has speakers.

Screenshots: Next up on the toolbar is the screenshot tool, which lets you quickly capture your DeX screen and anything you are viewing.

Notifications menu: You also have easy access to your phone’s notifications in DeX mode — it’s represented by the circled number on the right of the toolbar. Just tap the number to see all your notifications.

Quick Settings menu: At the far right 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, Wi-Fi and cellular connectivity, time and date. Tap any one of those to expand the menu and adjust your settings.

For complete access to all of your mobile phone’s settings, you can also open the regular Settings app in DeX mode.

What displays work with DeX?

Wired DeX can work on just about any monitor or TV with an HDMI port, however, the supported resolutions and aspect ratios differ depending on the mobile device and adapter used. After connecting to the monitor or TV, open your Settings and click into the DeX menu. There you will see the display resolutions supported for your setup. You may also need to adjust the settings on your monitor or TV to ensure content doesn’t overlap the edges of your screen, as noted in the “Tips for getting started” above.

For wireless DeX, most Smart TVs with Miracast will work, but Samsung Smart TVs released from 2019 onward provide the best experience. Samsung’s new Smart Monitor lets you create an entirely wireless DeX workstation.

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, Citrix or Amazon WorkSpaces 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 medium-sized 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.

DeX is also being leveraged in vehicles within public safety and other industries, or to power rugged mobile command centers.

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

Mobile computing is already transforming productivity across many industries, and businesses 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.

Discover more ways Samsung DeX can help you unlock the computing power you carry right in your pocket. Then get your free guide to taking your company mobile-only with Samsung DeX.

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Samsung for Business

A global leader in enterprise mobility and information technology, Samsung offers a diverse portfolio of enterprise technologies from smartphones, wearables, tablets and VR, to digital displays and storage solutions. We are committed to putting the business customer at the core of everything we do, serving diverse industries including education, finance, government, healthcare, hospitality, public safety, retail and transportation. Samsung is committed to helping customers realize the promise of a digital business. Follow Samsung for Business on Twitter: @SamsungBizUSA

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