Before you start the inspection
Set the display to a moderate or high brightness level and remove blue-light filters or extra color enhancements. Clean the glass so fingerprints do not hide small defects.
If possible, test indoors with controlled lighting. Harsh reflections make subtle OLED issues much harder to evaluate.
Core checks to run
Cycle through black, white, gray, and primary colors on the homepage. Watch for uneven tone, dead pixels, image retention, and strange edge coloration.
Pay special attention to the status bar and navigation regions because those are common burn-in zones on heavily used phones.
Why this matters for buyers and sellers
Buyers gain a fast way to confirm display condition before payment. Sellers can document panel quality and reduce disputes by checking the device ahead of time.
Keeping a simple checklist during the test also helps you compare several phones more objectively.
FAQ
What should I check first on a used phone?
Start with black, white, and gray screens, then inspect the status bar and navigation areas for burn-in or uneven tone.
Can reflections hide OLED defects?
Yes. Bright reflections can mask dead pixels, tint shifts, and retention, so indoor lighting is usually better for inspection.
Why is a display check useful before resale?
It helps sellers document condition clearly and gives buyers more confidence about the panel quality before payment.
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.