How to Test a Phone Camera

When you need to test a camera

Camera problems are among the most common issues on used phones. A quick browser test can verify the camera hardware works, the permission system functions, and the image quality meets expectations — before you commit to a purchase.

Step 1: Open the camera test

Navigate to the Camera Test page on the phone you want to test.

Step 2: Grant camera permission

The browser will ask for permission to access the camera. Tap Allow. If you tap Deny, the test will correctly report that permission was denied — the tool never bypasses your choice.

Step 3: Check camera detection

The test lists all cameras found on the device. On most phones you will see at least two — a front (selfie) camera and a rear camera. If only one camera is detected, the other may be damaged or unavailable.

Step 4: Verify resolution

The test reports the active resolution (width × height) and frame rate. Compare these numbers to the manufacturer specifications. If the resolution is significantly lower than expected, the camera may be malfunctioning or another app may be using it.

Step 5: Capture a snapshot

Use the snapshot feature to capture a test frame. This confirms the camera can not only stream video but also produce a still image. The snapshot stays on your device — nothing is uploaded.

Common camera issues

• "No camera found" — the camera may be physically damaged or another app has exclusive access.
• Permission denied — check the browser site settings and re-enable camera access.
• Low resolution — may indicate the camera sensor is degraded or the device is running in a power-saving mode.
• Black/white image — may indicate a hardware failure in the camera module.

Try it now

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