About Soi Máy

Soi Máy is a free tool for testing a phone, tablet, laptop or headphones right in the browser. Open the site on the device you want to check; there is nothing to install. The name is Vietnamese for “inspect the device”.

When to use it

When buying used (check before you pay), when selling (send the buyer a report), before and after a repair (screen, battery, board), when a new device is still within its return window, or simply when something seems off and you want to check.

What can it test?

The screen (dead pixels, backlight bleed, burn-in, refresh rate), touch, speakers, microphone, cameras, keyboard, touchpad, sensors, fingerprint and Face ID, battery and charging port, CPU performance, WiFi and GPS. For things a browser can't read, such as the IMEI, iCloud Activation Lock or battery health, there is a step-by-step checklist.

Your data

Every test runs on your own device. Images, sound and location are never sent or stored anywhere. See the Privacy Policy for details.

Cost

Soi Máy is free and is supported by advertising, sponsored content and affiliate links. Ads never appear on a screen where a test is running.

Contact

For feedback, bug reports or partnerships, email [email protected]. If a test misbehaves on your device, include the model, operating system and browser.