Hardware Tools HardwareTester Tools Tester

Compass Calibration

Verify your phone compass by comparing magnetometer and gyroscope headings. Follow guided motions, capture a true north reference, and measure deviation instantly.

Idle
Heading Magnetic heading
Hold steady
N
E
S
W
0°Point the device toward geographic north, then tap Set north reference.
Deviation Heading deviation
Awaiting data
0°
AlignedLarge drift

Values under 5° are considered excellent. Higher drift indicates more calibration work is needed.

MagnetometerN/A
Sensor fusionN/A
Reference northNot set
Guide Calibration guide
  1. Hold the phone flat, screen facing upward, away from laptops or speakers.
  2. Trace a smooth figure-eight motion in the air for 10–20 seconds.
  3. Rotate the device through all sides (portrait, landscape, upside down).
  4. Point the top edge toward true north and tap Set north reference.
  5. Repeat the figure-eight if deviation remains above 10°.

Ensure no magnets or metal cases are near the phone while calibrating.

About Compass Calibration

Compass Calibration monitors raw magnetometer headings versus the device orientation reported by the sensor fusion pipeline. By capturing a manual north reference, you can quickly spot interference or drift.

  1. Tap Start calibration and grant motion/magnetometer access when prompted.
  2. Follow the on-screen guide: perform a figure-eight and rotate the phone through multiple axes.
  3. Point the handset toward a known north reference and tap Set north reference.
  4. Check the heading deviation card. Repeat the motion routine until the drift stays low.
See also
SENSORS
WUTOOLS