Free Touch Screen Test Online - Multi-Touch, Dead Zones, Precision

Open Dead zones mode, enter fullscreen, and drag over every grid cell. Fast swipes are interpolated so cells cannot be skipped. When coverage reaches 92 percent the tool highlights the remaining cells for a confirmation pass - only cells still empty after that second pass are counted as dead.

Open Sampling rate mode and swipe in continuous circles for about 4 seconds. The tool counts coalesced touch samples per second of active dragging and reports the median in Hz: under 75 is a 60Hz-class panel, 75-150 is 120Hz class, 150-300 is gaming class, and above 300 is flagship class.

Capacitive digitizers fail by sense line, so a full-width or full-height stripe that never responds is a classic digitizer row or column failure. If the grid shows a dead band while the neighboring lines work, the panel usually needs a screen replacement - software fixes will not help.

iOS Safari caps touch delivery to web pages at 5 simultaneous touches, even though the hardware tracks more. This test expects 5 on iPhone and iPad and never flags it as a failure - it is a browser limit, not a digitizer fault.

Yes. Start the ghost watch (30 or 60 seconds), remove your hands during the 3-second grace period, and keep them away. Every phantom event is logged with its position and marked in red.

Save the PNG report card, retest with the screen protector and charger removed, and compare the pattern with the detailed KeyboardTester ghost touch and touchscreen dead-zone troubleshooting guide. The report embeds the verdict, stats, and device info so a repair shop can see exactly what failed.