How to use this test
Start the sensor
Allow motion access if your browser asks.
Move one direction
Move left/right, up/down or toward/away one direction at a time.
Watch the axes
Look for a response on the relevant axis; a rebound when stopping is normal.
What we check
The page observes only the browser API or touch events available during this session.
Values and availability depend on the device, operating system, browser and permissions.
What this test can’t tell you
Acceleration measures changes in motion, not position. Browser values can be filtered and are not a hardware diagnosis.
Something not working?
The test is unavailable
Open the page on the phone or tablet you want to check, then use a current browser and allow a sensor permission only if prompted.
The value does not change
Move the device deliberately or try another browser. A web page cannot enable a sensor that the browser does not expose.
Common questions
Does this diagnose my device?
No. It shows what the browser received in this session.
Is any sensor data uploaded?
No. The displayed values stay in this browser.