How to use an Android tablet as a second monitor

Turning your Android tablet into a second monitor is a practical way to increase your screen real estate without investing in new hardware. Whether you’re managing complex workflows or simply multitasking, using a tablet as a secondary display can streamline your setup. In this guide, we’ll explore some of the best apps for this purpose and how to set them up using both wireless and USB connections.

Why use an Android tablet as a second monitor?

For professionals on the go, in the field, or working with limited desk space, using an Android tablet as a secondary monitor offers flexibility and convenience. It’s perfect for extending your desktop, keeping chat or reference windows open, or running monitoring tools alongside your primary screen. With the right setup, you can achieve a seamless dual-monitor experience and use your mouse as well as your keyboard for both devices.

Wireless options for using an Android tablet as a second monitor

A wireless connection can be set up through both Wi-Fi and BlueTooth, making it a convenient option when you’re on the move.

Splashtop Wired XDisplay

Splashtop Wired XDisplay is a well-known app for turning your tablet into a second monitor. While it includes a wired option, its wireless feature makes it popular for those seeking portability.

How to Set Up:

1. Install the Splashtop Wired XDisplay Agent on your computer (available for Windows and macOS).
2. Download the Splashtop Wired XDisplay app on your Android tablet from the Google Play Store.
3. Connect both devices to the same Wi-Fi network.
4. Launch the app on your tablet and start the software on your computer. The tablet should automatically detect your PC and connect it as a second monitor.

Duet Display

Duet Display is another versatile option. Originally designed for iPads, it now supports Android tablets and offers smooth performance with minimal lag.

How to set up:

1. Install the Duet Display desktop client on your computer.
2. Download the Duet Display app from the Google Play Store (note: this app has a one-time purchase fee).
3. Ensure your computer and tablet are connected to the same Wi-Fi network.
4. Launch the app on both devices and follow the prompts to establish a wireless connection.

USB connection options for improved stability

For those who prioritize stability and responsiveness, a USB connection is the way to go. Wired setups eliminate the occasional latency or dropouts experienced with wireless connections.

Spacedesk

Spacedesk offers a reliable USB and wireless connection option. It’s free and supports multiple platforms, making it a popular choice.

How to set up via USB:

1. Download and install the Spacedesk Driver on your Windows PC.
2. Install the Spacedesk Viewer app from the Google Play Store on your tablet.
3. Connect your tablet to your computer using a USB cable.
4. Enable USB tethering on your Android tablet (usually found in the settings under Network & Internet or Connections).
5. Open the Spacedesk app on your tablet, and it should automatically detect your PC. Select your computer from the list, and your tablet will function as a second monitor.

iDisplay

iDisplay supports both USB and wireless connections, offering flexibility for different setups. While not free, its user-friendly interface makes it worth considering.

How to set up via USB:

1. Download and install the iDisplay desktop client on your computer.
2. Install the iDisplay app on your tablet from the Google Play Store.
3. Connect your tablet to your PC or Mac via USB and launch the app on both devices.
4. Follow the prompts to establish a connection and configure your tablet as a secondary screen.

Deskreen

Deskreen is an open-source tool that can transform any device with a browser into a second monitor. While primarily wireless, it can use a USB cable in tethering mode for better stability.

How to set up:

1. Install the Deskreen app on your PC or Mac.
2. On your tablet, connect via USB and enable tethering, or open a browser and navigate to the Deskreen link generated by the desktop app.
3. Follow the on-screen instructions to start using your tablet as a second monitor.

Tips for optimizing your setup

• Resolution Settings: Adjust your tablet’s resolution through the app’s settings for optimal performance and clarity.
• Power Supply: Keep your tablet plugged in during extended use to avoid battery drain.

Using an Android tablet as a second monitor is a practical and cost-effective solution when you need extra screen space. Whether you choose a wireless or USB connection, the apps listed above make it easy to set up and customize. Looking for more neat tablet tricks? Check out our guide on how to set up multiple users on an Android device.