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    How to use Android phone as a second monitor

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    Pau Monfort
    @paumonfort

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    Working on more than one monitor can save you a lot of time and increase the quality of your work. However, if you don't have a second monitor at home or if you only need a second monitor for a short period of time, you can use your Android phone. This can be a good better one because it doesn't take up much space and is portable too.


    In this article, we will show you several ways you can use your Android phone as a second monitor. Also, we'll look at the process of setting up Android TVs and tablets as a second monitor.



    How to use Android phone as a second monitor with a Windows PC

    There are many third-party apps that can make you use your smartphone as a monitor. With Windows, the best app you can use is Spacedesk, a screen mirroring and screen extension app. For this to work, there are a couple of things you need to do:

    1. Download the Spacedesk drivers on your Windows. Make sure you choose the correct installation file type for your Windows OS version.
    2. Follow the on-screen instructions to install Spacedesk.
    3. Install the Spacedesk app on your Android device.
    4. Open the application.
    5. Tap the "+" icon next to "Connect to the main machine (server)."
    6. Enter your Windows IP address.
    7. Tap the "Connect" button.

    When these two devices are connected, the Android screen will be the same as the Windows display. If you don't want your Android to mirror your Windows screen but simply act as an extension, this is what you need to do:



    1. Right-click anywhere on the Windows display.
    2. Choose "Display Settings".
    3. Select “Extend these displays” in the drop-down menu.
    4. Click on the "Apply" button.

    The good thing about this app is that you just need an internet connection to use it, no need for a USB cable. Just make sure Windows and Android are on the same LAN. Please note that the Spacedesk Android app can only be used with the Windows Spacedesk driver.


    How to use Android phone as a second monitor with a Mac

    The best screen mirroring app and extension available for your Mac is iDisplay. This is what you need to do to use your Android phone as a second monitor on your Mac:

    1. Download iDisplay drivers from their website.
    2. Allow iDisplay to make changes to your device.
    3. Follow the onscreen instructions to install iDisplay on your Mac.
    4. Restart your Mac if prompted.
    5. Download the iDisplay app from the Google Store.
    6. Open it on your Android device. The app will immediately start searching for nearby devices.
    7. Connect your Android to your Mac.
    8. Choose between "Additional monitor" and "Mirrored monitor".

    That's all there is to it. You can also use iDisplay with Windows and iPhone devices. Just make sure the two devices are connected to the same Wi-Fi. You can even use iDisplay to connect three or even four monitors. Also, you can connect multiple devices at the same time, although this only applies to Mirror mode.



    How to use Android phone as a second monitor with Linux

    Most screen mirroring and extender apps only work for Windows and Mac, but Linux users can turn to the Deskreen app. Also, this app allows you to use multiple displays at the same time. For this to work, you will need to have Wi-Fi or 5 GHz Ethernet. After you download the app on your Linux, here's what you need to do next:

    1. Download the Deskreen app on your Linux.
    2. Right click on the downloaded file and go to “Properties”.
    3. Check the "Allow this file to run as a program" box.
    4. Open the app on your Linux. You will see a barcode and link in the window.
    5. Scan the barcode or copy the link to the mobile app.
    6. Connect the two devices.
    7. Click on the "Allow" button.
    8. Choose “Share Screen View” or “Share App View”.
    9. Confirm that you want to share your Linux display on your Android device.

    With Deskreen, you can only use Wi-Fi or 5 GHz Ethernet to connect these two devices, or you can use a USB cable. This app is free and very easy to use.


    How to use Android phone as a second monitor via a USB cable

    Any of the third party apps mentioned above can also be used with a USB cable. This method may be more convenient in situations where you don't have a Wi-Fi connection. However, to download any of these apps, you need to be connected to the internet.



    Basically, whichever app you choose, here's how you can use it with a USB cable:

    1. Connect your Android device and your computer or laptop with a USB cable.
    2. Download the app of your choice to your computer.
    3. Follow the onscreen instructions to install it.
    4. Download the app on your Android app.
    5. Connect the two devices.

    You won't want to disconnect the USB screen while sharing your screen. Since the USB method is an alternative, you can also simply use Wi-Fi to maintain the connection between these two devices. Just make sure it's the same Wi-Fi.

    How to use Android TV as a second monitor

    Not only can you use Android phone as a second monitor, but you can do the same with your Android TV. In this case, your Android TV and your computer will need to be on the same Wi-Fi. You may also need an HDMI cable or you could use your Android TV as a second monitor wirelessly with Chromecast. The Chromecast app and the Chrome extension can be used with your computer and phone.

    As you may know, Chromecast allows you to play movies and TV shows on your computer, which you can watch on your TV. Once you've added the Chromecast extension to your Chrome, here's what you need to do to use your Android TV as a second monitor:

    1. Open Google Chrome on your computer.
    2. Click the Chromecast button in the top right corner of the browser. Next to “Broadcast this card to…” select the right arrow. You will see the following options: "Cast current tab", "Cast full screen" or "Sound mode".
    3. Select "Cast Full Screen".
    4. Click "Yes" in the confirmation window.
    5. Select your Android TV in the device list and wait for these two devices to connect.

    You will now be able to use your Android TV as a second screen. When you no longer want to use your Android TV for this, you can simply click the “Stop Sharing” button on your computer.


    How to use an Android tablet as a second monitor

    Using an Android tablet as a second monitor might be an even better option for a much larger screen. You can use any of the apps we mentioned above for your Android tablet. If you don't want to use any, you can download Splashtop Wired XDisplay. This app is compatible with Windows, macOS, iOS, Kindle and Android devices. Note that you will need a USB cable for this app.

    To use your Android tablet as a second monitor, follow these steps:

    1. Download the Splashtop Wired XDisplay app to your computer. Make sure you choose the correct version for your operating system.
    2. Follow the onscreen instructions to install the app.
    3. Download the app on your Android tablet.
    4. Connect these two devices with a USB cable.
    5. Start using your Android tablet as a second screen.

    How to connect Android phone to TV

    Extend the screen with your Android

    There are many reasons to want a second screen, whether it's for work or play. Fortunately, there are various third-party apps that you can use to use your Android phone as a second monitor or mirror your computer's display. All you need is an internet connection and a USB cable.

    Further Reading:

    • The best curved monitors
    • How to connect multiple monitors at the same time in Windows 10
    • How to connect monitor to laptop
    • Connect 3 monitors to the PC, how to do it
    • How to connect Chromebook to the monitor
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