How to Use an Android Tablet as a Second Screen in Windows 11 - MUO - MakeUseOf

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Dual monitor computer setups are now much more common than they were just a few years ago, both in workplaces and at the home. Connecting a second screen to your computer can increase productivity and makes it much easier to work with multiple apps or programs.

If you don't have the space or budget for a full-sized second screen, here's how to set up an Android tablet as a second screen for Windows 10 or 11 using Spacedesk.

How to Install Spacedesk on Your Windows PC

You will need two pieces of software to start using an Android tablet as a second computer monitor. The first of these is the SpaceDesk Windows driver, which can be found on the Spacedesk website.

Click the Download button and then choose the version you want to use. The version for Windows 10 and 11 is available for both 64-bit and 32-bit systems, so make sure you select the correct one. You can check if your computer supports 32-bit or 64-bit in Settings > System > About. The System Type section shows you which version your computer supports.

Read our guide to find out more about the difference between 32-bit and 64-bit hardware and software.

After downloading the correct Spacedesk driver, double-click the file to run the installer. Accept the EULA and check the installation location is correct. Allow the installer to set up a firewall exception, and then click the Install button to finish the driver setup.

You need to add that exception to your firewall or it might block the connection to Spacedesk. If you use third-party antivirus or firewall software, you may need to add the exception manually. To do this, find the firewall settings in whatever security software you use, and tell it to allow 'spacedeskService.exe'.

Installing Spacedesk on Your Android Device

The second piece of software you need can be found in the Google Play Store. Connect to your Wi-Fi and open the Google Play Store on the Android device you want to use as the secondary screen.

Search for the Spacedesk app and install it. The app is compatible with Android version 4.1 and later, so you shouldn't have any problem installing it unless you are using a very old tablet.

With the app installed, you then need to decide if you want to connect it to your Windows PC using Wi-Fi or a USB cable.

How to Connect to Your Extra Screen Using Wi-Fi

Connecting to the extra screen wirelessly is the best choice if you are somewhere with a strong Wi-Fi network available. It gives you more freedom to move the second screen around, and you can charge the tablet if needed.

Check that the Spacedesk Driver is running on your Windows PC by looking for the icon in the System Tray. You may need to check the hidden icons in the pop-out menu.
The Spacedesk software is configured to run automatically when your computer starts. If you disabled this option or closed the software, you can restart it from the main app list in the Start Menu.
On your Android device, open the Spacedesk app. It will already be set to use Wi-Fi for the connection and will begin looking for one as soon as it opens.
Tap the name of your computer when you see it appear in the connections list. After a second or two, you will see your PC screen mirrored on your tablet.

To change the second display to an extension rather than a copy of your main screen, right-click on your PC desktop and choose Display Settings from the menu. Click the Duplicate these displays button and change it to Extend these displays.

You can see the virtual position of the second display shown in the Display settings. The default is to the right of the main screen. This means that to move a window or app to the second screen, you need to drag it off the right side of your main screen. Physically placing your second screen to the right of your main screen makes dragging things onto it much less confusing.

How to Connect to Your Extra Screen Using USB

Connecting the extra screen via a USB cable can be a better choice if you are not sure how stable or fast the available Wi-Fi network is. If you are using an older Android tablet, a USB connection can also be faster and less prone to lag.

To use a USB cable to connect your Windows PC to the second screen, you will need to be using an Android device that allows USB Tethering. Not all of them do, but if your Android device can connect to a mobile data network you should be able to use the USB connection method.

Connect the USB cable to your Android device and a spare USB port on your Windows computer. When your Android device asks if you want to allow access to data, tap Allow.
Open the Android device settings and go to Connections > Mobile Hotspot and Tethering. Enable the USB Tethering option. If you don't see that option, or the hotspot and tethering section, your device can't be connected via USB.
Open the Spacedesk app on your phone or tablet and tap the connection you see in the connections list. If you don't see any connections listed, tap the plus button and enter the IP address of your computer. If you aren't sure what your IP address is, take a look at our guide to finding your IP address in Windows 10. Fortunately, the steps in that guide still work on Windows 11 at the time of writing.

windows 11 displayed on Android tablet screen

After a second or two, you will see your PC screen mirrored on your tablet. To change the second display to an extension rather than a copy of your main screen, right-click on your PC desktop and choose Display Settings from the menu. Click the Duplicate these displays button and change it to Extend these displays.

Using an Android Device as a Second Screen for Windows

Adding a second screen to your Windows computer can help improve productivity and allows you to have many more apps or windows open at once. Using an Android tablet as an extra display can save you desk space, and can also be a great dual-screen solution when traveling or working remotely.