Alright, you've decided you want Duet – that's great news! Here's a step-by-step tutorial of how to get started along with help to fix any issues you may come across along the way.

Installation

You need two software applications to make duet work – one in your computer and another in your iDevice. Duet Display works with all major platforms – PC, Mac, iOS and Android. Below you will find installation instructions for each.

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Download and install for iOS

First, install Duet for iOS – the latest version can be found here. The app requires iOS 12.0 or later – although, previous app versions are compatible with iOS 7.

Installation is simple, like any other iOS app, just download and you'll see the icon on your home screen. Tap on it to open when you want to use Duet.

Next, you need Duet for Mac or PC. We distribute the desktop apps on our website here.

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Download and install for Mac

Download the latest macOS version from here – requires macOS Big Sur or later. If you wish to use Duet on an older macOS, please reach out to us at team@duetdisplay.com for further assistance.

To install the app, please double-click on the .app file, which will install Duet in your Applications folder. Once installed, you will see the app's icon in the menu at the top right of your Mac (a lower case d with a circle around it). If you need to change any settings, click on the menu bar icon to open Duet's UI on macOS.

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Download and install for Windows

Download the latest Windows version from here – requires Windows 10 or later.

To install the app, please double-click on the .exe file, which will install Duet on your PC. Once installed, you will see the app's icon in the menu at the bottom right of your PC (a lower case d with a circle around it). If you need to change any settings, click on the menu bar icon to open Duet's UI on Windows.

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Connect Duet

This is the easy part. Start Duet on iOS and on your Mac or PC. Now connect your iPad or iPhone to your computer using either USB to 30 pin, lightning cable, USB-C and/or USB-C to USB-C (the same one you use for charging) and voilà!

When Duet detects the iPad or iPhone it will change the message from "Connect to Mac or PC" to "Launching Duet" right before your new desktop is displayed on the computer.

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What next?

You should now have a second display connected to your desktop! Just click and drag the title bar of your apps and move them across the edge of your computer's screen to your new Duet Display.

If you are having any trouble getting set up, the fastest way to solve the problem is to search for it using our help center at the top of this page. If you're still stuck, please contact us at team@duetdisplay.com as soon as possible – our team will be happy to help out!

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Frequently Asked Questions

What cable do I need for Duet Display?

If you want to use Duet Display to connect two devices through a wired connection, Duet requires a 30-pin, lightning or USB-C cable (please make sure your cable is Apple-certified – which would be the same one you use to charge your iDevice).

How do you connect with Duet?

First, start Duet on iOS and on your Mac or PC. Now connect your iPad or iPhone to your computer using either USB to 30 pin, lightning cable, USB-C and/or USB-C to USB-C. Duet will now connect.

Does Duet Display work over Wi-Fi?

Yes, Duet Display works over Wi-Fi. Duet can be used both on a 2.4GHz or 5GHz network, but we recommend using a 5GHz.

What is Duet Display and do I need it?

Duet Display is a software application that allows you to use your mobile device as a second display for your computer. It enables you to extend your desktop or mirror your computer screen, and works on all major platforms: PC, Mac, iOS and Android.

Why is Duet not connecting?

If you are connecting devices using a USB cable, please check the following: connect the USB cable directly to the port of your Mac or PC; try changing to another USB port on your computer; make sure your USB cable can transfer data rather than only be used for charging.

If you are using Duet Display wirelessly, ensure you have a stable internet connection. We recommend to use a5GHz Wi-Fi connection for better connectivity and experience. Check your Wi-Fi frequency on Windows, Mac, Android, and iOS devices.

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