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 maximise 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.
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 a fully maximized view.
