You can connect your phone camera via inviting it as a Guest into your live stream. Here's a tutorial on how to do it.
You can also emulate you phone camera as webcam using a software like EpocCam. Check out how to setup EpocCam here.
After you successfully installed EpocCam software, you just need to:
- Add a Camera Layer to your project in LiveReacting Studio
- Click on a drop down menu on the left bottom corner
- Choose EpocCam as a camera source