Your Samsung Phone Has a Secret Desktop Interface

If you've got a Samsung phone, you've got an alternative, lightweight option for computing on the go: Galaxy handsets come with a desktop interface called DeX built right in, and depending on what you need to do, you might be able to use this mode in place of a laptop while on your travels.

Essentially, you plug your Samsung phone into a TV or monitor, and Android shifts to look more like Windows or macOS. You're still using the same software and the same apps, but you get floating windows and easier multitasking.

While a lot of the apps will stick to their mobile views, you can make use of apps such as Google Docs or Google Chrome to get work done while you're away from home (or just in a different room). And of course you've got access to all your movie and music streaming apps too, on a bigger screen.

How to set up Samsung DeX

You've got a few different connection options when it comes to Samsung DeX. It actually works wirelessly if you have a TV or monitor with Miracast technology built into it—or a streaming box or dongle with Miracast support. That includes most Samsung TVs made in the last few years, for example, so if you're heavily invested in the Samsung ecosystem then you're already a step ahead.

To launch Samsung DeX wirelessly, open Settings on your Galaxy phone, then choose Connected devices > Samsung DeX. Alternatively open the Quick Settings panel (swipe down from the top right of the screen), then tap the DeX button—if you can't see it, swipe down on the panel of tiles to see the full selection. Your phone will scan your wifi network for compatible hardware, and you can tap on a device to connect.

If you can configure Samsung DeX with a wired connection, it's usually easier and more reliable. The cable you're going to need will depend on the external monitor or television you're connecting to: You might need a USB-C to USB-C cable, for example, or a USB-C to HDMI cable. Most cables should work with the right connectors, but I'd advise searching for ones that specifically mention DeX in the listing.

You can use USB-C hubs and docking stations too, which is handy if you want to plug a mouse and keyboard in as well. Again, most models should work, but they won't necessarily all work—a bit of internet research should guide you towards products people are already using with DeX. This $12 Ugreen hub is the one I've been using for Samsung DeX, so you can see you don't necessarily need to spend a lot of money here.

You don't have to use a keyboard and mouse with DeX, because you can use your phone's keyboard, and turn it into a makeshift trackpad (you can even use an S Pen to control DeX). However, if you need to get some serious work done, from essay writing to emailing, then you'll probably want to hook up a mouse and keyboard. That's what I've done: The Galaxy phone, HDMI cable, and keyboard and mouse all plug into the hub.

Launching DeX in a wired configuration is the same as launching it in a wireless configuration, though if you're using cables and hubs then as soon as you connect an external monitor to your Galaxy device, you should see a prompt to connect. Future connections can be launched automatically (to manage this open Settings on your phone, then choose Connected devices > Samsung DeX).

How to use Samsung DeX

With DeX launched, you should see the desktop interface up on the external screen. It's a bit like having a second monitor for your phone, because you can carry on using apps on your Galaxy device the same as you normally would. You'll find a few app shortcuts already on the DeX desktop, which you can double-click to launch, and a taskbar showing open apps along the bottom.

In the lower left corner, you've got the standard Android buttons: the recent apps button, the home button, and the back button. To the left of those is a search button and an all apps button, which brings up shortcuts to every app installed on your phone. Over on the right of the taskbar, you've got an array of buttons, including ones for checking notifications, taking screenshots, and checking battery and signal level.

To customize DeX further, double-click the Settings shortcut on the desktop, then pick Samsung DeX. You've got a host of options here, covering font size, wallpaper, the shortcuts available on the taskbar, how the keyboard and mouse work, and whether to play audio through your phone or through the speakers attached to the bigger screen.

Operating DeX is fairly straightforward. Apps appear in Windows, with shortcut buttons in the top right corner. They will (from left to right) pin an app window (keep it on top of other apps), minimize an app window, put an app window full screen, or close the app. You're able to resize windows using their edges and move them about using their title bars much as you would on Windows or macOS.

There are a bunch of keyboard shortcuts you can make use of too, which make it a little easier to get around the interface: Ctrl+Enter (Windows keyboard) or Cmd+Enter (Mac keyboard) will take you to the home screen desktop. To see all of the shortcuts you can use, press Ctrl+/ (Windows) or Cmd+/ (Mac).

It all works slickly and quickly, and while Samsung DeX isn't something I use a lot, it occasionally comes in handy—especially in moving between home and the office when I only need to carry a Galaxy phone in my pocket. It's actually such a good idea that Google is expected to include its own version of DeX in Android 16.