GUIDE深度 · Deep dive
Device Test Checklist: 2 Minutes Before a Call
Run the pre-call check in a fixed order: permission, device selection, camera image, mic level, left/right speakers, keyboard/mouse, then a second browser. Change one variable at a time so you know what fixed it.
Allow in the address bar and OS privacy.
Pick the exact device, not 'default'.
Check image, level, left/right.
Retest in another browser/port.
Meeting apps lock the camera.
Speakers plus mic cause echo.
Unpowered hubs drop devices.
FAQ
Does passing mean the device is fine?
It means it works in this browser/environment; intermittent issues need longer/second-environment tests.
Do I need drivers?
Not for the web test; check OS drivers only if the device is not recognized.