Dead Pixels: Touch Screen Test

▶ DEAD PIXEL & SCREEN TEST
Dead Pixels: Touch Screen Test helps you quickly check your Android screen and touchscreen with simple, practical diagnostic tools.
Use the app to inspect dead pixels, stuck pixels, bright pixels, touch response, ghost touch, multi-touch, screen edges, touch accuracy, display colors, refresh rate, and screen information.

▶ DEAD PIXEL & COLOR TEST
Display full-screen colors to help identify dead, stuck, bright, or abnormal pixels.
Test black, white, red, green, blue, gray, cyan, magenta, and yellow screens to inspect the display more clearly.

▶ TOUCH GRID TEST
Check for areas of the touchscreen that may not respond correctly.
Move your finger across the grid to reveal missed or unresponsive touch areas.

▶ GHOST TOUCH TEST
Monitor the screen for unexpected touch activity.
Place the device on a flat surface and avoid touching it while the test runs. The app records unexpected touch events without making unsupported hardware claims.

▶ MULTI-TOUCH TEST
Test multiple fingers at the same time and see how many simultaneous touch points your device detects.
View detected touch positions in real time.

▶ EDGE TOUCH TEST
Check whether touch input works correctly near the top, bottom, left, and right edges of the screen.

▶ DRAG CONTINUITY TEST
Drag your finger continuously across the display and look for interruptions or gaps in the touch path.

▶ TOUCH ACCURACY TEST
Tap displayed targets and measure how closely the detected touch point matches where you intended to touch.

▶ GRADIENT & GRAYSCALE TESTS
Inspect smooth gradients and grayscale levels to help reveal:

• Color banding
• Uneven transitions
• Dark and bright tonal steps
• Display irregularities

▶ REFRESH RATE & FPS
View the device's reported screen refresh rate and real-time rendered frame rate.
Useful for checking whether the display is operating at the expected refresh rate.

▶ DISPLAY INFORMATION
View useful screen details including:
• Resolution
• Logical resolution
• Density DPI
• Screen density
• Aspect ratio
• Refresh rate
• Brightness
• HDR support when available
• Wide color gamut support when available

▶ USEFUL FOR
Dead Pixels can be useful when:
• Buying a used Android phone or tablet
• Checking a screen after repair or replacement
• Looking for dead or stuck pixels
• Investigating unresponsive touch areas
• Checking possible ghost touch
• Testing multi-touch support
• Checking edge touch response
• Inspecting colors and gradients
• Viewing screen and refresh rate information

▶ SIMPLE, PRIVATE & OFFLINE
No account required.
No backend required.
No camera permission.
No microphone permission.
No location permission.
No special accessibility permissions.

▶ Your screen tests run locally on your device.
▶ Dead Pixels: Touch Screen Test is designed to be fast, clear, and easy to use — open the app, choose a test, and start checking your screen in seconds.