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Compass or altimeter on your watch not calibrating properly

Compass and altimeter problems are almost always caused by something near the watch throwing off the sensors — a metal object, a strong magnet, or even your phone in a metal wallet. Move away from anything metal and try calibrating again. If you're indoors, go outside and do the calibration in open space with nothing metal nearby — this fixes it for most people.

Your watch has tiny sensors that detect Earth's magnetic field and air pressure to figure out direction and altitude. When metal or magnets are close by, they scramble those sensors and give wrong readings. Outdoor calibration away from anything metal lets the sensors find true north and altitude again. If the sensors themselves are damaged from a drop or water exposure, recalibration won't help.

Risk: Medium ⏱ 5-10 minutes Beginner

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