Touch Screen Test

Drag your finger (or mouse) across the area to paint it. Blank spots may be dead zones.

Active touches: 0
Max simultaneous: 0

This touch screen test checks that your display responds correctly to touch. Drag your finger slowly across the whole area below — wherever you touch is painted. Any spot that stays blank as you pass over it may be a dead zone where the digitizer is not responding.

You can also test multi-touch by pressing with several fingers at once; the counter shows how many touch points are detected. It works on phones, tablets and touchscreen laptops.

As you touch and drag, the page paints every point your finger reaches. By covering the whole surface you can see if any region fails to register — those blank gaps are likely dead zones. The counter also reports how many fingers (touch points) are detected at once. Everything runs locally in your browser.

Slowly drag one finger across the entire test area in overlapping strokes, like colouring in a page, until the whole surface is painted. If a patch refuses to fill in no matter how you swipe over it, that part of the digitizer is probably not responding — a hardware fault often caused by damage or a faulty screen protector.

Place several fingers on the screen at the same time and watch the "Active touches" counter. A modern phone usually supports 5 or 10 simultaneous points. If pressing with two fingers only ever shows one, multi-touch may be failing or limited by the device.

The test is designed for touchscreens, but on a regular computer you can still use your mouse to paint the area. For a real touch test, open this page on a phone, tablet or touchscreen laptop.

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