Pre-Call Device Check

The combined checklist is for quick readiness. Open the dedicated Mic, Webcam or Speaker tools when you need deeper measurements or troubleshooting.

1. Microphone

Not checkedPermission is only requested when you start the test.

Local

2. Camera

Not checkedThe preview is not uploaded or recorded.

Private preview

3. Speakers / headphones

Keep system volume comfortable before playing the short low-level tone.

Not checkedBrowser-generated 440 Hz tone; this does not calibrate loudness or hearing.

Manual check

Checklist

0/3Core checks complete

0%Checklist progress

—Visible media devices

—Secure context

Run the device checksFor deeper measurements, open the dedicated Mic Test, Webcam Test, Speaker Test, or Media Permission Checker.

Mic Test Webcam Test Speaker Test

What this tool checks

Run microphone, camera and speaker basics on one page before a call or stream.

How to use the result

The combined checklist is for quick readiness. Open the dedicated Mic, Webcam or Speaker tools when you need deeper measurements or troubleshooting.

Privacy & browser limits

Device streams and input events used by this page are handled in your browser unless the page explicitly says otherwise. Permission, label, timing and hardware-field availability depend on the browser and operating system.