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Touch Screen Test
Drag across the area below to paint it. Any spot that stays blank is a dead zone. Use several fingers to check multi-touch. Best on a phone, tablet or touch laptop.
Active touches: 0
On a desktop, click and drag with your mouse. On a touchscreen, use your fingers.
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How to test your touchscreen
- Slowly drag a finger across every part of the area, covering edges and corners.
- Watch for any patch that doesn't get painted — that's a dead zone.
- Place several fingers at once; the active-touch counter shows how many points register (multi-touch).
- Lift your fingers and watch for marks appearing on their own — that would be a ghost touch.
Common touchscreen problems
Dead zone
An area that never responds, often from a cracked digitizer or a screen-protector bubble. Remove protectors and retest.
Ghost touches
Phantom taps can come from a faulty charger, a bad screen protector, or digitizer damage. Try a different charger and remove the protector first.
Frequently asked questions
How do I test my touchscreen?
Drag across the whole area — any unpainted patch is a dead zone. Use multiple fingers to test multi-touch.
How many fingers should register?
Most modern phones detect 5–10 simultaneous touches. The counter shows your screen's live count.