Screen Test & Dead Pixel Test

Test screen quality, detect dead pixels, touch issues and burn-in.

Detect dead pixels screen is a lightweight, professional tool for testing and calibrating smartphone screens. Use it to find dead or stuck pixels, run full white-screen and color checks, adjust and lock brightness for precise results, measure touch latency, and validate touch gestures and screen pressure behavior. Ideal for technicians, QA testers, repair shops, and power users who need accurate, repeatable display tests.
A detect dead pixels screen tool is essential for anyone who wants to check their display quality. With this app, you can easily spot issues like dead pixels and stuck pixels that may not be visible in daily use. By running a white screen or solid color test, even the smallest dead pixels become visible, helping you confirm if your display needs repair or replacement. This professional screen tool ensures accurate results in just a few taps.
The app includes multiple modes such as dead pixel test, screen brightness tool, and full screen test options to verify every aspect of your display. The dead pixel test highlights defective spots, while the screen brightness tool allows you to control and lock brightness for precise evaluation. Using the screen tool feature, you can also check for color uniformity, backlight bleeding, and display consistency.
Whether you want to detect dead pixels screen issues before buying a used phone or run a quick dead pixel test on your current device, this all-in-one screen tool has you covered. Combine the white screen and screen brightness tool functions with the complete screen test suite to ensure your device’s display is working perfectly every time.
Key features:
• Dead / Stuck Pixel Detection — Run full-screen white, red, green, blue and custom color tests to reveal dead or stuck pixels quickly.
• White Screen & Color Tests — Full-screen solid colors and gradients to check for uniformity, backlight bleeding, and tint.
• Brightness Control & Lock — Precisely adjust brightness and lock screen brightness for repeatable testing across devices.
• Screen Latency & Touch Response — Measure touch latency and visualize response time to diagnose performance issues.
• Screen Calibration & Gesture Tests — Calibrate color/white-balance guides, and verify gestures (swipe, multi-touch) and pressure sensitivity.
• No Internet Required — All tests run offline; lightweight and battery-friendly.

How to use:
Open the test you want (White, Red, Green, Blue, Custom, Gradient).


Adjust brightness and lock it if needed.


Inspect the screen visually or use the highlight tool to scan for dead pixels.


Run latency and gesture tests to validate touch.
Why this app?
Screen Tool gives fast, repeatable diagnostics for anyone who needs reliable display checks — from repair technicians to ordinary users verifying their phone’s screen before resale or service requests.
Try Screen Tool now — find and document screen problems in seconds.

Recent changes:
Detect dead pixels screen