Black crush refers to a screen defect where dark shades or blacks appear compressed, losing detail and appearing as solid black blocks, often noticeable in low-light scenes.
Quick Visual Test Method
Follow these steps using only your phone's display settings to identify black crush:
- Step 1: Open a full-screen grayscale gradient image (e.g., a smooth transition from pure black to white) on your device.
- Step 2: View the image under normal room lighting. Look for uneven bands or crushed blacks where dark grays blend into solid black without detail.
- Step 3: Dim the ambient light or enter a dark room. Reduce screen brightness to the lowest setting and re-examine the gradient. If details vanish completely in dark areas, you likely have black crush.
Simple Evaluation
Assess the gradient smoothly: a healthy display shows subtle transitions in all shades. If the test indicates issues, consider professional diagnostics or settings adjustments like turning off unnecessary display modes.
