Screen Checker - 디스플레이 진단

Screen Checker is an essential utility app that allows anyone to easily and precisely diagnose the condition of smartphone and tablet displays (OLED, LCD). Complete all tests with a single app, whether you are inspecting a device before trading a used phone or want to check the screen condition of your device in detail.

📌 Main Features 📌

✔️ Dead Pixel & Burn-in Test

Visually check for hidden dead pixels or physical defects on the display through full-screen solid colors (RGB, White, Black, etc.).

✔️ Touch Screen Test

Perfectly inspect for dead zones or areas with poor touch recognition by swiping directly over square tiles that fill the entire screen. ✔️ Gradient & Contrast Test

Displays smooth gradient screens in four directions (top, bottom, left, and right) to thoroughly check for color banding (staircase effect) and shadow details (black crush) in contrast expression.

✔️ OLED Pattern Test

Utilizing precision grid and dot patterns—which are much more advantageous for identifying display distortion than standard solid-color screens—definitively detect burn-in marks, a chronic issue with OLED displays.

✔️ Text Readability Test

Fills the screen with ultra-small text that shrinks finely from 24sp to 4sp to examine pixel matching and text rendering clarity, which are characteristic of high-resolution panels such as QHD.

Diagnose hidden defects in your smartphone display with Screen Checker!