Why Android phone dead pixels are worth checking
Even a tiny defect can feel distracting on a close-viewed phone, especially during reading or dark scenes.
Early testing is also helpful before resale, trade-in, or the end of a return window.
Best colors for confirmation
White helps reveal dark dead pixels, while red, green, and blue help confirm whether one subpixel channel is weak or stuck.
Black can also reveal bright stuck pixels that remain visible when the rest of the screen should be dark.
How to avoid false positives
Clean the panel first and inspect from normal distance before moving closer. Dust and tiny scratches can look like dead pixels at first glance.
A true defect stays fixed in the same place on every relevant test screen.
FAQ
Which screen reveals dark dead pixels best?
White is often the clearest starting point, followed by strong primary colors for confirmation.
How can I tell a dead pixel from dirt?
A real dead pixel stays fixed in the same place across test screens, while surface dirt can move or look different after cleaning.
Should I check dead pixels before resale?
Yes. It helps you describe screen condition more honestly and avoid buyer disputes.
Run the test now
Use the OLED Test homepage to open fullscreen colors, inspect uniformity, and compare panel behavior in real time. The browser-based workflow is fast, free, and works well for quick repeat checks.