Install a webcam app on your phone and computer
Connect your phone and computer to the same Wi-Fi network, or use a USB cable if supported
Open the app on your phone and grant camera and microphone permissions
Open the companion app or driver on your computer
Select your phone as the camera source in Zoom, Teams, OBS, or other video apps
Position your phone on a stand or tripod
Keep the phone charged during use
Use the rear camera for better video quality
Enable landscape mode for a wider frame
Test audio and video before joining a call
Adjust focus, lighting, and framing as needed