Install a phone webcam app on your phone and the matching client on your PC
Connect your phone and PC using USB, Wi-Fi, or Bluetooth if supported by the app
Enable developer options and USB debugging on Android if required
Allow camera, microphone, and network permissions on your phone
Open the webcam app on your phone
Open the desktop client on your PC
Select your phone as the camera source in your video app
Adjust camera position, lighting, and focus
Keep your phone charged or connected to power
Use a tripod, stand, or mount to hold the phone steady
Close other apps using the camera to avoid conflicts
Test audio input if you want to use the phone microphone
Set the correct resolution and frame rate in the webcam app
Disconnect safely after use and close the app on both devices