My Device Test Report

How the report works

Under each test on this site there is a short bar with three buttons: Looks fine, Found a problem and Skip. Press one and that test is saved on this device with the time. If you found a problem you can add a few words about it, such as which corner the stuck pixel was in.

This page then puts every mark in one list and adds the facts a browser can read about the device itself: screen size, pixel density, color gamut, whether it reports HDR, touch points, processor threads and the graphics chip name when the browser exposes it. The refresh rate is measured live for about a second while the page loads.

Nothing leaves your device. The marks live in your browser’s local storage, so they disappear if you clear site data or open the report in another browser. If you need to keep it, copy the text or download it before you close the tab.

Using it when you buy a used device

Open the tests on the phone or laptop you are about to buy, work through the screen, touch, sound, camera and keyboard checks, and mark each one as you go. When you are done, the problems are listed at the top of the report with your notes, which makes it easy to ask for a lower price or walk away. The used device test checklist shows which tests matter most and what a browser cannot check.

What the report cannot tell you

A browser cannot read battery wear, activation locks, the IMEI or serial number, or physical damage. The device facts here come from what the browser chooses to share, and some browsers hide or round them on purpose, so treat them as a guide rather than proof.

Questions

Where is my report stored?

Only in this browser, in local storage on this device. Nothing is sent to our servers, so the report is gone if you clear site data or switch browsers. Copy or download it first if you want to keep it.

Can I use the report when buying a used phone or laptop?

Yes. Run the tests on the device you are buying, mark each one, then show the report to the seller or keep it as a record. It only covers what a browser can check, so battery wear, locks and physical damage still need a look in person.

Why does the refresh rate say it was measured?

Browsers do not report the refresh rate directly. The page counts how often the screen asks for a new frame for about a second and rounds the result, so it can read lower than the panel’s true rate if the browser is busy or in power-saving mode.