Dead Pixel Test · Guide
OLED Dead Pixel Test
Phone and tablet screens — OLED or LCD — are inspected the same way: solid colours, judged by your own eyes, entirely in the mobile browser with nothing to install. This page covers the mobile-specific details; the test itself runs on the main page.
Running the test on a phone or tablet
Rotate to landscape for the largest test area and swipe sideways to change colours. Stuck pixels on iPhone and Android phones are checked exactly like on any other screen: look for a dot that glows the wrong colour on dark fields.
Phone screens are dense, so a suspect dot is tiny. Confirm it on both black and white, rule out dust by tilting the screen and wiping gently with a microfibre cloth, then record it on the screen map.
Notches, cutouts and browser bars
The notch, camera cutout and address bar hide small parts of the panel — check those areas separately by rotating or scrolling. This test cannot inspect pixels hidden behind them, and neither can any other web page.
On iPhone Safari there is no fullscreen mode for web pages, so the test continues viewport-sized and says so openly. The colours work the same; only the covered edges need a second look.
What this test will not do
It will not repair anything: there is no flashing fixer here and no pressure instructions, which can damage a panel. If you searched for how to fix dead pixels on your phone, the safe path is to confirm the fault with this visual check, save the inspection summary, and contact the manufacturer or seller about repair or replacement under their pixel policy.
Everything runs locally in your browser. Spot marks stay in page memory unless you opt in to keeping notes on the device, and summaries are generated locally on download — nothing is uploaded.
Honest limits: this guide helps you identify possible display problems with your own eyes. It cannot repair hardware pixels, diagnose your display automatically, or decide warranty claims. Read the limits.
Guide FAQ
Does this work on iPhone and Android?
Yes — it runs in the mobile browser with no app to install. Rotate to landscape, swipe to change colours, and check the notch and cutout areas separately.
Will it fix my phone screen?
No. This is a detection-only visual check. It cannot repair hardware pixels or decide warranty claims.