Which tool do you need?
- Screen Test for dead or stuck pixels, backlight bleed, IPS glow and burn-in on any monitor, laptop, TV or phone.
- Touch Screen Test for spots that do not respond to touch, and to see how many fingers your screen tracks at once.
- What Phone Do I Have? to see your phone model, system version, screen resolution and browser.
All three run on your device. Nothing you test is uploaded, and there is nothing to install.