How to use this tool
- 1Open this page on the phone itself (not on a computer).
- 2Tap 'Enable sensors' and allow access if asked.
- 3Tilt the device and watch the green level bubble move.
- 4Rotate the phone flat and watch the compass heading change.
About this test
The gyroscope and accelerometer detect rotation and tilt, they rotate your screen, drive games and stabilize the camera. The compass (magnetometer) reports your heading relative to magnetic north, essential for map apps.
In this tool the level bubble should react smoothly to tilting and the compass should turn as you rotate. Frozen values indicate a faulty or disabled sensor.
Privacy: this tool runs entirely in your browser. No image, audio or device data is recorded or sent to any server.
Frequently asked questions
My compass points the wrong way. How do I fix it?
Do the figure-8 calibration motion with the phone in the air. Metal objects and magnets nearby also disturb the reading.
Does it work on a computer?
Most computers don't have these sensors. Use your phone for a real test.