How to make a second monitor out of your phone

How to use a tablet screen as a monitor

Almost any IT-shnik, and, in principle, some ordinary tablet owners dream of using it to their advantage. connecting it to the system unit so that information is displayed on the tablet like on a regular monitor. The first thing that comes to mind is to connect the tablet to the video card using an HDMI. miniHDMI cable, provided that the tablet and graphics card have these connectors.

After all, using an HDMI cable, a digital signal with multimedia data. video, sound, etc. should be transmitted. But the problem is that in a tablet, the HDMI connector is an output, not an input. Those. it can transmit an image to another device (for example, a monitor or TV), but not receive.

However, you should not be upset, because there is good news. You can make the main monitor out of the tablet at the software level. A special program will help the computer recognize the tablet as a monitor. There are three options for how you can use such a “tablet monitor”:

  • Complete replacement for a standard monitor. Can be used in case of emergency, for example, if a normal monitor is broken.
  • The tablet can easily turn into an additional monitor to the main monitor. Everything that happens on the monitor can be duplicated on the tablet display.
  • The tablet screen can become a “continuation” of the main monitor, ie. for example, on a large screen you can watch a movie, and on a tablet screen you can read correspondence, control any computer program with a mouse and keyboard, read mail, and in general, do absolutely everything that you usually do on a PC.


We need a USB cable to connect the tablet to a PC (or you can connect via Wi-Fi), install the program on the computer, and on the tablet.

  • Install iDisplay on your computer. you can download it for your version of the operating system from the official website for free. Be sure to restart the PC, otherwise the connection will not work.
  • Install the application on a tablet from Google Play. It is paid, and costs 5 bucks (but if you really want to try the application for free, use
  • Launch iDisplay on your computer.
  • We launch the iDisplay application on the tablet. Click on the plus sign to add a “server”, i.e. your PC data (for Wi-Fi connection). For a USB connection, connect the USB cable to your PC and tablet, and click the “USB Connection” button.
  • We are asked to enter IP, port, and name. The IP address and port number can be viewed in the tray by hovering the mouse over the iDisplay. We transfer the data to the tablet. Enter anything for the name.
  • When everything is ready, click “Add and Connect”.
  • Further, if the IP and port are entered correctly, an “iDisplay autorization” window will appear on the computer screen asking if you want to reject the tablet connection, connect once, or automatically connect every time you receive a request from the tablet. I recommend clicking “Always allow”, so this question will no longer pop up, and the connection will be automatic.
  • The monitor will go out for a couple of seconds, blink a little, and calm down. Then the desktop of the computer OS will appear on the tablet.
make, second, monitor, phone


This completes the installation, but we need to choose whether the tablet will be the main, backup or additional monitor. To do this, in Windows, go to the display resolution settings (to open the menu. right-click on the desktop).

In front of the words “Multiple Screens”, click on the small triangle. If “Duplicate Screens” is selected, the tablet will repeat the entire contents of the main monitor, almost like a parrot. The Expand Screens option will enable different information to be displayed on two monitors. They will use the same desktop, but they can work independently, complementing each other.

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Now comes the fun part. If you would like the tablet to act as the primary monitor, select “Show desktop only 2”, and then click Apply. Then you should open the tray, right-click on the iDisplay icon, select “Settings”, and click on “launch at Windows startup” so that a checkmark appears there.

Now, when you restart the PC and disconnect the normal monitor, when the system boots, the program will automatically start, and you just need to connect to this program through the tablet, and your OS desktop will appear on the screen of your tablet.

In order not to be unfounded, I conducted an experiment, whether the tablet will work as a monitor when I turn off a normal monitor, and recorded the result on video. I went into a text editor, opened a browser, watched the video via YouTube, and went to the website, where you are reading this article. I connected to the tablet via Wi-Fi, plus a program for capturing video from the screen was turned on, so it is possible that slight delays in the video will be visible. If you connect via USB, the connection will be more stable and the picture will be faster. Apologies in advance for the video quality (max 480p).

This monitor has a couple of disadvantages. First, to use the tablet screen as a monitor, you must first install the program, and for this you need to see what you are doing. Those. if the monitor breaks down, you need to connect another, working one to the PC, install and configure the program, and only then disconnect the monitor and use the tablet screen instead. The second drawback is that when you start the system, you need to manually start the connection with the PC on the tablet each time. And third, the most important thing is that you need a tablet with a good resolution and a fairly large display. The tablet in the video is a 7-inch, the cheapest Chinese device on the planet with cracked glass. There is very little comfort from using such a “monitor”, but a 9-10 “tablet is much better suited for such purposes.

Advantages: the possibility of touch input from the tablet remains; with a “monitor”, you can lie on the sofa, or go to the kitchen, if the Wi-Fi signal is enough, and use your computer.

Cable or WI-FI?

For an emergency expansion of the working surface, you can use a tablet, if it is not there, then even a smartphone will do. In addition to this, the device also needs the correct software.

Splashtop’s free Wired XDisplay software does the job just fine. You will also need a wired connection to your computer. best with a USB cable and a USB 3.0 port (USB 2.0 can be used).

How to use your phone as a second monitor

It is also possible to establish a wireless connection using programs such as Spacedesk or iDisplay. But the first program does not always work stably, and the second is paid, so it is better to make the choice in favor of the cable.

How to make a second monitor from a smartphone or tablet?

Lacking a work surface? Need an extra screen but don’t have a monitor? There is a way out. a tablet or a smartphone. How to make a second monitor out of it?

Sometimes, for comfortable work, there is not enough work surface on which to place, for example, a messenger or a browser. But an extra monitor means an unexpected expense and less desktop space. However, there are situations in which an additional screen is simply necessary. Then a smartphone or tablet will come in handy!

Installing the software

After pre-installing the software on a tablet and laptop or personal computer (an agent is needed on the computer. Wired XDisplay Agent), you need to launch both applications. You must first enable USB debugging on the tablet (not needed for iOS users). Fortunately, the application itself reminds you of this and opens the necessary settings. And voila! The second screen is connected!

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Now it is enough to connect the equipment. It should also be borne in mind that the software will boot the computer, so with a processor like Intel Atom, you might run into a performance issue. This can be eliminated by setting the quality and performance by choosing low.

How the second screen works?

After that, you can start working. The device should work in the same way as a standard monitor, but the quality and number of FPS may decrease.

This particular software has some limitations. First, you need to use a USB cable and access a USB 3.0 port. At the same time, not everyone wants to install an additional cable, and there is not always a free port. But the quality depends on it. The second is the session time limit. In the free version of XDisplay, a session lasts up to 10 minutes, after which the program shuts down and must be restarted. Of course, this is annoying and can scare you away from working with her.

Is it worth?

If you urgently need an additional screen, then you can safely use this solution. It should be borne in mind that tablets have small screens, so the work surface will also be small. As noted, you can also use a smartphone for this, but the screen there is even smaller and the work will not be comfortable enough.

Despite all the stated disadvantages, this is a real way to cheaply and quickly increase the work surface. The software is free, and most users have a tablet or smartphone, as well as a USB cable to connect devices to a computer. It should be noted that the Wired XDisplay program is available for both the Android and Apple platforms, but users of tablets with Windows installed will not be able to use it.

How to connect an Android device as a second display to a PC, laptop or Windows tablet

In order to be able to use an Android smartphone or tablet as an additional, wireless monitor for your Windows device, you first need to install a special driver from Spacedesk on it.

After you have downloaded the driver installer and installed it, you will need to restart your PC, laptop or Windows tablet so that it is ready to connect your Android device.

3.On your Android device, you need to install the Spacedesk client software by downloading the corresponding application from this page on the Google Play Store

Launch Spacedesk for Android on your smartphone or tablet. The application should automatically find your PC, laptop or Windows tablet with the Spacedesk wireless display driver installed on it. If it doesn’t, enter the IP address of your device manually (screenshot on the right):

Click on the “Connect” button and your Android device will start to display on its screen what you see on the display of a PC, laptop or Windows tablet.

Optionally, you can display a separate Windows desktop on the display of the mobile device.

To do this, right-click on the desktop of your Windows device and select “Display Settings”. Expand These Screens instead of Duplicate Screens, which is the default here:

As soon as you put your Android smartphone or tablet into sleep mode, it will automatically disconnect from your Windows device. Very simple and convenient, isn’t it?

Spacedesk. Functionality at its best

Spacedesk is a fairly popular application for “turning” your Android device into a second monitor for pairing with a Windows PC on board. Spacedesk runs on a local network, so you don’t need an active internet connection. Installation is simple: you can connect your computer to Android via USB, Wi-Fi or LAN. The program works in a fairly high resolution, and on top of that, touch input from the Android screen is supported.

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To get started, you need to install the required drivers on your Windows computer. The application is available for Windows 7 and newer OS versions. After opening the application, it will automatically scan and display all devices on the local network that have the Spacedesk application installed. Run the corresponding program on your Android device and connect.

iDisplay. Everything is great, but without a flaw

iDisplay was originally a program exclusively for macOS and iOS. And it wouldn’t have made it to this list if it hadn’t received Android and Windows support. This makes iDisplay one of the best solutions on the market today. It supports pairing mode up to 60 frames per second and even recognizes multi-touch gestures. The only drawback that may alienate a number of users is that the application does not have a free version. Did you know that your device can easily be used as a second screen? Tell us about it in our Telegram chat.

Google Remote Desktop. Google’s Sleek Solution

Google Remote Desktop allows you to establish a connection between Android and a Windows PC. Other operating systems are not supported. Alas. At the same time, Google Remote Desktop not only allows you to make a “second screen” out of your gadget, but also gives you the ability to control your PC desktop from your smartphone. You just need to have a Gmail account to work. And you won’t have to pay for the program at all.

How to make a second monitor from an Android tablet

It is quite possible to make a second monitor for a computer with Windows on board from an Android tablet or smartphone. To do this, you need the appropriate software and a USB cable if you are going to connect a mobile device not via Wi-fi.

make, second, monitor, phone

An Android tablet completely replaces a full-fledged monitor. You can display a browser, office programs and much more on a tablet. A second monitor is usually needed for those who use a PC to work, for example, with graphics. in this case, you can display a palette of colors or layers on the tablet.

When working with sound, the tablet can be used as a mixing console to free up the desktop for a more comfortable work. Ordinary PC users do not need such an extension, but it is done so simply that anyone can try it.

You can connect a tablet to a PC to work as a second monitor using several programs, but they all work in a similar way.

How to connect an Android device as a second monitor to a PC, laptop or Windows tablet

If you had an idea that your PC, laptop or Windows tablet would be useful for a second display, but you do not want to spend money on buying a new monitor, or you are not satisfied with this solution in terms of mobility, then today we would like to introduce you one way out of this situation.

This output consists in using a smartphone or tablet running the Android operating system as a second display, which you can connect to your PC, laptop or Windows tablet via a wireless (WI-FI) connection.

Such a solution will appeal to those who put mobility in the first place and who care about the absence of the need to use special cables for this.

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