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Magic Mouse not tracking? Inspect the underside sensor before cleaning

Apple advises checking the underside sensor window for debris when a Magic Mouse tracks poorly. Power off first and keep liquids out of openings.

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Apple's official cleaning guidance says to switch off wireless mice, wipe the exterior with a lightly damp lint-free cloth, inspect the sensor window under a bright light and, if debris is present, use compressed air gently. Avoid scratching the sensor or soaking the body.

Your try-it-at-home checklist

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Switch off the mouse and unplug any charging cable; follow the model guide if it has removable batteries.
Turn it over and inspect the sensor window and glide feet for dust or hair in good light.
Wipe the outer shell with a soft lint-free cloth. If needed, barely dampen the cloth with water, keeping moisture away from openings.
If debris is visible in the sensor window, use compressed air gently as Apple suggests. Do not press the nozzle against the sensor or tilt a can so liquid escapes.
Never insert sharp tools into the sensor area, spray cleaner onto the device or immerse the mouse.
When fully dry, power on and test tracking on a suitable flat surface. Consult Apple Support if problems remain.

Your try-it-at-home checklist

Further reading

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