How to use an Android phone as a second monitor

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Working on multiple monitors 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 time, you can use your Android phone. It can be much better because it doesn’t take up much space and is portable as well.

In this article, we are going to show you several ways to use your Android phone as a second monitor. We’ll also look at the process of setting up Android TVs and tablets as a second monitor.

How to use an 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 application you can use is Space office, a screen mirroring app and a screen extender. For this to work, there are several things you need to do:

  1. Download I Spacedesk driver on your Windows. Make sure you choose the correct installation file type for your version of the Windows operating system.
  2. Follow the onscreen instructions to install Spacedesk.
  3. To install the Spacedesk application on your Android device.
  4. Open the app.
  5. Tap the “+” icon next to “Connect to main machine (server)”.
  6. Enter your Windows IP address.
  7. Press the “Connect” button.

When these two devices are connected, the Android screen will be the same as the Windows screen. If you don’t want your Android to mirror your Windows screen but just act as an extension, here’s what you need to do:

  1. Right click anywhere on the Windows screen.
  2. Choose “Display Settings”.
  3. Select “Extend these views” from the drop-down menu.
  4. Click on the “Apply” button.

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

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

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

  1. Download the 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 to search for nearby devices.
  7. Connect your Android to your Mac.
  8. Choose between “Additional Monitor” and “Mirror Monitor”.

That’s all we can say about it. You can also use iDisplay with Windows and iPhone devices. Just make sure both devices are connected to the same Wi-Fi. You can even use iDisplay to connect three or even four monitors. In addition, you can connect multiple devices at the same time, although this only applies to mirror mode.

How to use an 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 to the Deskreen app. Also, this app allows you to use multiple screens at the same time. For this to work, you will need a 5 GHz Wi-Fi or Ethernet network. After downloading the app to 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 box next to “Allow this file to run as a program”.
  4. Open the app on your Linux. You will see a barcode and a link in the window.
  5. Scan the barcode or copy the link to the mobile app.
  6. Connect the two devices.
  7. Click 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 an Android phone as a second monitor via a USB cable

All the third party apps mentioned above can also be used with a USB cable. This method may be more convenient in situations where you do not have a Wi-Fi connection. However, to download any of these applications, you must be connected to the Internet.

Basically, whatever 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 application of your choice on 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 display 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

You can not only use an Android phone as a second monitor, but you can also 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 can use your Android TV as a second wireless monitor with Chromecast. The Chromecast app and Chrome extension can be used with your computer and phone.

As you may know, Chromecast lets you 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 on the Chromecast button in the upper right corner of the browser. Next to “Distribute this card to …” select the right arrow. The following options are displayed: “Cast current tab”, “Cast in full screen” or “Sound mode”.
  3. Select “Cast full screen”.
  4. Click “Yes” in the confirmation window.
  5. Select your Android TV from the device list and wait for these two devices to connect.

You can now 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 above mentioned apps for your Android tablet. If you don’t want to use one, 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 application.

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

  1. Download the Splashtop Wired XDisplay app on 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 for wanting a second screen, whether for work or play. Fortunately, there are various third-party apps 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.



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