A free app for Android, by Online Camera Apps.
With the Universal App, you can connect and use your Android device as a webcam with ease. It works on Android phones with a built-in microphone and camera.
The app is based on the UVC standard, which is an audio/visual communication standard that allows you to transfer data between a webcam and the device that is used to make the video call.
How to Use
The first step is to install the app. Once you have done that, you will be able to use it.
To use the app, you will need to connect your phone to your webcam.
After that, you will need to open the app. You will be able to see your webcam on the screen.