Pro Multi-Touch & Diagnostic Grid
Swipe to turn every block solid green. Find the dead zones.
What we do
The same method used by Samsung and Apple technicians. Swipe over the empty boxes to snap them to solid green, instantly revealing any hidden dead zones.
Gamers need high response times! We live-track your screen's Touch Sampling Rate (Hz) so you can verify if your phone is truly 60Hz, 120Hz, or 240Hz.
Water damage or cheap replacement screens often click by themselves. Our automated 30-second monitor watches for and flags phantom inputs.
Place multiple fingers on the screen simultaneously. Our tool tracks each unique touch point to verify if your device supports true 10-point multi-touch.
Modern curved screens are notorious for edge failure. This dedicated mode tests only the extreme outer borders of your display to ensure full functionality.
Your privacy is absolute. This diagnostic tool runs entirely Client-Side using your browser's HTML5 API. No data is ever recorded or transmitted.
