Touch Screen Test – Draw to Find Dead Zones
Draw to testReady
- Runs locally, nothing uploaded
- Allow permissions when asked
- Some sensors need a phone
- Runs inside your browser
- No upload, no account
- Nothing saved after you close
Online touchscreen tester
This touch screen test finds dead zones on a phone or tablet screen. Swipe across the whole canvas; gaps in your lines show areas that do not register touch.
Dead zones
Damage or a faulty digitiser leaves areas that ignore touches.
Ghost touches
Points appearing without touch point to a failing digitiser or a charger causing interference.
How to Use the
Touch Screen Test
- 01
Clean
wipe the screen.
- 02
Draw
swipe lines across every area.
- 03
Edges
test corners and edges.
- 04
Gaps
broken lines mean dead zones.
Dead zones
Damage or a faulty digitiser leaves areas that ignore touches. Screen protectors with bubbles can also block touch.
Ghost touches
Points appearing without touch point to a failing digitiser or a charger causing interference.
Touch FAQ
Purpose
Find dead zones before a repair or purchase.
Testing several points at once
Use the multi-touch test.
More phone tests
Try the accelerometer, gyroscope and vibration tests.
Several points at once
Test several touch points at the same time
Place multiple fingers; counts appear below the canvas.
Related guides and fixes
Learn more in these guides: Webcam not working, Keyboard ghosting explained, Fix mouse double clicking, Webcam settings.
Frequently Asked Questions
Q.Works on laptops?
Yes, with touch screens; mouse also draws.
Q.Calibrate?
Windows has Tablet PC Settings → Calibrate.
Q.Is anything uploaded?
No. Everything runs locally in your browser.