ScreenTest - Dead Pixel Check

Screen Test is a lightweight, privacy-focused app that helps you check your iPhone and iPad display quality with 10 professional screen tests.

TESTS INCLUDED:
- Dead Pixel Test - Detect dead or stuck pixels with solid color backgrounds
- Touch Screen Test - Find dead zones that don't register touch input
- Multi Touch Test - Check how many simultaneous touch points your screen supports
- Color Accuracy Test - Verify color reproduction with RGB gradients, grayscale, and SMPTE color bars
- Screen Uniformity Test - Detect backlight bleeding and uneven brightness
- Contrast Test - Check contrast ratio with checkerboard and stripe patterns
- Grid / Line Test - Detect screen distortion with grid, crosshair, and circle patterns
- Response Time Test - Check for ghosting and motion blur with moving objects
- Brightness Test - Test screen brightness levels from 0% to 100%
- Burn-in Test - Detect OLED burn-in and image retention with special patterns

DEVICE INFORMATION:
- View detailed specs: device model, chip, iOS version, RAM, storage
- Screen info: size, resolution, refresh rate, aspect ratio, density

WHY SCREEN TEST?
- Ultra lightweight - under 500KB
- No ads, no tracking, no analytics
- No internet connection required
- Works completely offline
- Supports 20 languages
- Dark and Light themes
- Supports all iPhones including iPhone 17 series

Perfect for checking a new or used phone before purchase, verifying screen repairs, or testing display quality.