Touch Screen Test
Slide your finger across all squares to test for dead zones.
Ready to Test Your Screen?
Swipe across all the squares. Any square that doesn't turn green indicates a potential dead zone on your touchscreen.
About Touch Screen Testing
This Touch Screen Test helps identify dead zones and calibration issues on your device's touchscreen. The grid covers your entire screen area, making it easy to find any spots that don't register touch input.
How to Use
- Click "Start Test" to begin
- Slide your finger across all the blue squares
- Each square turns green when touched
- If any square stays blue, that area may have a dead zone
- Use fullscreen mode for the most accurate test
What to Look For
- Dead Zones: Squares that won't turn green no matter how many times you touch them
- Edge Issues: Pay special attention to corners and edges of your screen
- Streaks: Lines of unresponsive squares may indicate digitizer damage
What This Test Can Help You Diagnose
Use this page to look for dead zones, ghost touches, edge rejection issues, and slow drag response. If taps only fail in one area of the panel, the problem is more likely hardware-related than app-related.
Frequently Asked Questions
Why are some squares not responding?
This could indicate a dead zone on your screen. Try cleaning your screen first, then repeat the test. If the same areas fail, your touchscreen may need repair.
Should I use fullscreen mode?
Yes! Fullscreen mode tests the entire screen area including edges, providing the most comprehensive test.
Can a screen protector affect results?
Yes, thick or poorly applied screen protectors can reduce touch sensitivity, especially at edges. Try removing it temporarily to test.