Does your touchscreen respond everywhere?
Test your touchscreen: how many fingers are recognised at once (multi-touch), dead zones across the surface, pressure and contact size. Phone, tablet or touch PC.
Every touched cell is coloured: a cell that stays empty after several passes shows a dead zone.
FAQ
How many fingers can a screen recognise?
Most phones and tablets recognise 10 touch points; some touch PCs stop at 2 or 5. The test shows the maximum the device reports and the one you actually reach.
How do I find a dead zone?
Slide your finger over the whole grid: every touched cell gets coloured. A cell that stays empty although you swiped it several times shows an unresponsive zone, often caused by a cracked glass or a lifted screen protector.
Why does pressure stay at 0.5?
Most touchscreens do not measure pressure: the browser then reports a fixed value of 0.5. Only styluses (Apple Pencil, S Pen, Windows pens) send real pressure.