This touch screen test verifies every part of your display registers your finger or pen. Use draw mode to trace lines and reveal dead zones, or switch to grid mode and try to light all 40 cells. The active-pointer count goes up to 10 to confirm how many simultaneous touches your hardware reports — a common spec to verify on tablets and 2-in-1 laptops.
What the touch screen test catches
- Lines that skip — digitiser problems or screen-protector interference.
- Phantom touches — damaged digitiser or moisture on the screen.
- Multi-touch capped at 1–2 — budget panel or driver issue.
- Dead corner or strip — failed bezel contact, common after a drop.
Frequently asked questions
The touch screen test shows dead zones but the phone seems fine.
Modern operating systems compensate for small dead spots by interpolating. The test exposes them directly. Try removing your screen protector first — it's the most common cause of skipping lines.
Does this work on a desktop touchscreen?
Yes. The test reads pointer events from any input device that reports touch — phones, tablets, touchscreen laptops, and graphics tablets all work.
Why does my stylus draw broken lines?
Either the stylus tip isn't making firm contact, the active-stylus battery is low, or the screen-protector layer is too thick for the digitiser to track reliably.
How many simultaneous touches should my screen support?
Phones typically report 5, tablets and Surface-class laptops report 10. Anything below the spec usually points to a driver issue rather than the panel.