What to inspect on a premium large-screen iPhone
White and gray are best for tint and uniformity, black helps with retention, and the primary colors reveal dead pixels or weak channels. A bigger panel also makes edge and corner issues easier to spot.
Because this is a high-end device, buyers usually expect a very clean display.
How to test fairly
Use stable indoor lighting and compare several brightness levels. Avoid relying only on normal app views because strong colors can hide tint and subtle uniformity issues.
Pay special attention to the status bar, keyboard zone, and corners if the phone has had long daily use.
When buyers should be concerned
At this price level, strong tint, burn-in, or dead pixels matter more because the panel is a key part of the product value. Even moderate central defects should reduce confidence.
If the display does not look clearly premium, it should affect the offer price.
FAQ
Should I test an iPhone 15 Pro Max screen before buying used?
Yes. Premium OLED phones should still be checked for tint, burn-in, and dead pixels.
Which screens matter most for a quick iPhone 15 Pro Max check?
White, gray, black, red, green, and blue provide a strong first-pass inspection.
Do larger phone screens make panel issues easier to notice?
Yes. Bigger displays make edge and corner variation easier to see.
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.