Adding a second monitor is one of the best ways to improve your productivity—whether you’re working, editing videos, researching, coding, or multitasking between apps. But what if you don’t have an extra monitor lying around? Well, if you own an Android tablet, you’re in luck. You can easily turn it into a wireless (or wired) second display for your Windows PC.
Since you’re here reading about this topic, we’re guessing you want a simple and reliable way to extend your Windows desktop to an Android tablet. Maybe you want more workspace for productivity apps, or you’re looking to monitor chats or social feeds while gaming. Whatever the reason, this guide will walk you through multiple methods—from free apps to premium solutions that offer near lag-free performance.
Why Use an Android Tablet as a Second Display?
Using your tablet as a secondary monitor comes with several advantages:
- More screen space for multitasking
- Portable—use it anywhere
- Touch support (in some apps)
- Wireless flexibility
- Cost-effective compared to buying another monitor
If you’re trying to improve productivity without spending extra money, this solution is perfect.
1. Use SpaceDesk (Free and Most Popular Option)
SpaceDesk is one of the most reliable apps for turning your Android tablet into a secondary display. It offers both wired and wireless modes and works with minimal lag.
Step 1: Install SpaceDesk on Your Windows PC
- Visit the official SpaceDesk website: spacedesk.net
- Download SpaceDesk DRIVER for Windows.
- Install the driver and restart your PC.
Step 2: Install SpaceDesk on Your Android Tablet
- Open Google Play Store.
- Search for SpaceDesk.
- Install the SpaceDesk Viewer app.
Step 3: Connect Your Tablet to the PC
- Make sure both devices are on the same Wi-Fi network.
- Open the SpaceDesk Viewer on your tablet.
- Your PC should automatically appear in the list.
- Tap to connect.
Your Windows screen will immediately extend to your Android tablet.
Optional: Use USB Tethering for Lower Latency
If you want a smoother experience:
- Connect your tablet to PC via USB.
- Enable USB tethering in Android settings.
- Relaunch SpaceDesk Viewer.
This greatly improves performance for drawing, editing, or gaming dashboards.
Why SpaceDesk Is Great
- Free
- Smooth performance
- Supports extended display & duplication
- No watermark
- Touch input supported
2. Use Duet Display (Paid but Very Smooth)
Duet Display is a premium option originally built for iPads but now works perfectly on Android tablets as well.
- Extremely low latency
- Wired + wireless modes
- Works with pressure-sensitive styluses
- Stable and polished interface
Step 1: Install Duet on Windows
- Go to duetdisplay.com.
- Download the Windows app.
- Install and open it.
Step 2: Install Duet on Android Tablet
- Open Google Play Store.
- Search for Duet Display.
- Install the app (one-time purchase).
Step 3: Connect Your Tablet
- Connect via USB for best performance.
- Open Duet on both devices.
- The tablet will immediately become your second monitor.
Duet is especially useful for artists using drawing tablets like the Samsung Galaxy Tab.
3. Use Splashtop Wired XDisplay (Good Free Wired Option)
Splashtop’s Wired XDisplay gives you a stable wired second monitor experience via USB.
- Install Wired XDisplay Agent on Windows.
- Install the XDisplay app on your Android device.
- Connect tablet to PC using USB.
- Launch the apps on both devices.
Your screen will extend through the USB link, providing smoother performance than Wi-Fi.
4. Use Microsoft’s Built-In Projection (Limited but Works)
If your Windows PC supports Wireless Display:
Enable on PC:
- Go to Settings → System → Projecting to this PC.
- Enable Available everywhere.
On Android:
- Open the Cast or Smart View menu.
- Select your Windows PC.
Note: This mirrors your screen—not a true second display. But helpful for quick access.
5. Use VNC or Remote Desktop (Not a True Extended Display)
Tools like VNC Viewer or Microsoft Remote Desktop let you control your PC from your tablet, but they do NOT act as extended secondary monitors.
Useful for remote access but not for desktop expansion.
How to Arrange the Display Once Connected
Once your tablet is detected as a second display:
- Open Settings → System → Display.
- Drag the tablet’s display box to position it:
- Left
- Right
- Above
- Below your PC screen
- Select Extend Display for multitasking.
This arrangement helps match real-life placement for seamless cursor movement.
Wrapping Up
And that’s a wrap on your comprehensive guide on how to use an Android tablet as a second display for your Windows PC. Whether you prefer a completely free solution like SpaceDesk or a premium low-latency app like Duet Display, turning your tablet into an external monitor is easier than ever—and hugely beneficial for productivity.
