Display Tester: Touch Screen

Display Tester is the quick, free way to check that your iPhone or iPad screen is working perfectly — before you buy a used device, after a screen repair, or whenever something just feels off. TOUCH TEST Swipe your finger across a grid of dots covering the whole screen. Every dot you touch lights up, so dead zones and unresponsive areas stand out instantly. Fill the grid to pass the test. MULTI-TOUCH TEST Put several fingers on the screen at once and watch a colored circle follow each one. The live counter shows exactly how many touch points your display detects. COLOR & DEAD PIXEL TEST Tap to cycle through full-screen black, white, gray, red, green, blue, yellow, cyan and magenta. Solid colors make dead pixels, stuck pixels, backlight bleed, tint and burn-in easy to spot. DISPLAY INFO See your screen's key specs at a glance: screen size, pixel density (ppi), scale factor, maximum refresh rate, native resolution, notch / Dynamic Island, brightness, safe-area insets and more. MADE TO BE SIMPLE • Four screen tests in one clean app • Light, dark or system theme • 18 languages, including Arabic, French, German, Hindi, Indonesian, Korean, Portuguese, Russian, Spanish, Thai, Turkish and Vietnamese • Works on iPhone and iPad • No account or sign-up needed GREAT FOR • Checking a second-hand iPhone or iPad before buying • Verifying a screen replacement or repair • Finding dead spots on a touch screen • Spotting dead or stuck pixels and display tint Display Tester is free and supported by ads.