How to Test Your Camera Before a Video Call

A camera that worked last week may be covered, pointed the wrong way or unavailable to the app you’re using today. A quick test before a video call can help you spot those problems while there’s still time to fix them.

This guide covers a simple check on a computer or phone, including how to tell whether your video-call app can see the camera. It focuses on video, not microphone troubleshooting.

Before you start

Use the device and app you plan to call with, if possible. A camera that works in one app might still be blocked or unselected in another. You don’t need to start a real call with another person: Zoom offers a test page, and Google Meet lets you preview your setup before joining a meeting.

Steps to test your camera

1. Uncover the camera lens. Look for a privacy shutter, sliding cover, sticker or case that could block the lens. On a laptop, the camera is usually near the top edge of the screen; on a phone, check the camera you intend to use.
2. Wipe the lens gently. Use a clean, soft cloth to remove fingerprints or dust. Avoid pressing hard or using a rough material.
3. Set up the device where you plan to call. Put it on a steady surface and point the camera toward where you expect to sit. On a phone, a stand or stable support can make it easier to keep the image still.
4. Open your video-call app or its test page. In Zoom, visit zoom.us/test and follow the prompts to join a test meeting. In Google Meet, open a meeting link and use the preview before joining. If you use another service, look for its camera preview or device settings.
5. Allow camera access if your device asks. Read the prompt and allow access if you want that app or browser to use the camera. If you previously blocked it, check the device’s privacy settings or the browser’s site permissions. The menu names differ between operating systems and browsers.
6. Choose the camera you intend to use. If the app has a camera selector, open it and choose the built-in camera or the external webcam you want. A laptop connected to a monitor, dock or external camera may offer more than one choice.
7. Check the preview image. Confirm that you can see yourself and that the picture is not black, frozen or showing an unexpected view. Move your head or raise a hand briefly; if the image responds, the camera is transmitting a live picture to the preview.
8. Adjust the position and lighting. Aim the camera around eye level if practical, and leave a little space around your head and shoulders. Face a light source when you can; a bright window or lamp directly behind you can leave your face dark.
9. Repeat the check in the app you will actually use. If you tested in a different app, open the intended service and check its preview too. Confirm the correct camera is selected there before joining.

If the preview is blank

First, check the physical basics: uncover the lens, make sure an external webcam is connected, and confirm that you selected the right camera. If another app is using the camera, close that app and try again. Then check whether the browser or video-call app has permission to use the camera. On a Mac, Apple’s camera privacy controls are in System Settings under Privacy & Security; other devices have their own app-permission controls.

For a browser call, also check the permission for the specific website. In Chrome, camera access can be managed in site settings. If you change a permission, return to the call page and try the preview again; you may need to reload the page. If the camera still does not appear, close and reopen the app or browser. Avoid granting camera access to an app or website you do not recognize or trust.

Things to know

• A preview checks the picture, not the whole call. It does not guarantee that your internet connection will stay strong or that other people can hear you. Test audio separately if needed.
• Framing can change after you move. Check the image from the position you plan to use during the call, rather than testing while holding the device in your hand.
• Background effects are optional. If you plan to use blur or another effect, check the preview with it turned on. Effects may not be available on every device or in every app.
• On a phone, check the camera switch. Many calling apps let you switch between the front- and rear-facing cameras. Make sure the preview shows the view you mean to share.

A minute spent checking the lens, permissions, camera choice and framing can make joining a video call less stressful. If the preview looks right in the app you plan to use, you’re ready to join.