Screen Test app icon — dead pixel and touch diagnostics tool

Test your screen.
Every pixel.

Dead pixel detection, touch responsiveness test, and multi-touch diagnostics.
Perfect for buying or selling a used phone.

Screen Test is a free, lightweight screen diagnostics app for Android and iOS, developed by uax.io. It helps users detect dead pixels, test touch responsiveness, and verify multi-touch support — essential checks before buying or selling a used phone. The app requires zero permissions and is under 1 MB.

Download on Google PlayDownload on App Store
4.3 ★Rating
3Test Modes
0Permissions
Features

Three tests.
Complete coverage.

Dead Pixel Test

Cycle through solid colors — red, green, blue, white, black — to spot stuck or dead pixels.

Touch Test

Draw on the screen to verify touch responsiveness across every area of your display.

Multi-Touch Test

Test how many simultaneous touch points your screen supports.

Full Screen

Tests run in true full-screen mode for maximum visibility.

No Permissions

Zero permissions required. The app never accesses your data, camera, or network.

Tiny Size

Under 1 MB. Install it, run your test, done.

Check your screen now.

Essential tool before buying or selling a phone.

Get it on Google PlayGet it on App Store
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