Free online iphone black screen test- Check your iPhone display with pure black, solid colors, grayscale, and gradient patterns. No app installation required.
Test Your iPhone Screen
Start the test, switch colors, and inspect the display for visible pixel defects or uneven colors.
Keyboard: use ← and → to change tests. Press Escape to exit fullscreen.
Black Screen Test
Display pure black to inspect dark-screen uniformity and look for visible bright spots or light leakage.
Pixel Inspection
Use solid colors and grid patterns to look for pixels that appear stuck, discolored, or unusually bright.
Color & Gradient
Examine color uniformity, grayscale transitions, and visible banding across your display.
How to test your iPhone screen
- Open this page on your iPhone in Safari or another supported browser.
- Tap Start Screen Test and select Pure Black.
- For a black-screen inspection, test in a dim room and increase display brightness carefully if needed.
- Switch to white, red, green, blue, and gray to look for pixels that stand out.
- Use Fullscreen to remove browser controls from the test view.
- Press Stop Test when finished.
Note: This tool displays test patterns; it cannot directly diagnose hardware faults or measure your screen's actual brightness.