You Can Use An Android As A Second Screen For Mac – Here’s How

To use the wired option, you need to enable USB Debugging on your Android device. To do that, you must first enable Developer options on your Android device.

Go to your Android device’s Settings and tap “About Device” (note, this terminology may vary with the phone’s brand). In this section, go to Software information, where you will find the “Build number.” Tap the Build number seven times quickly, and you will see a toast message saying, “You are now a developer.”

Now, go back to the main Settings menu, and you will find “Developer options.” In some Android interfaces, this option may be tucked under “Additional Settings.” For simplicity, you can use the search bar on top of Settings to find it. Once you enter the Developer options, scroll down until you see “USB Debugging” and tap the adjacent toggle to enable it.

Then, attach your Android device to the Mac using a USB cable and tap “Allow” on a dialog box asking your permission to trust the computer.

Once the wired connection between your Mac and Android is active, go to the Duet app on your Android device and tap the USB symbol on the left. You will now be able to use the Android device as a secondary screen.