🔊 Volume full · 📱 Speaker facing down
Uses a low-frequency tone (165 Hz), the same idea as the Water Lock eject on smartwatches. Remove headphones first.
Starting…
Keep the phone face down — almost done
Wipe the speaker grille with a dry cloth. Now test the sound:
60 seconds of multi-frequency pulses (80–300 Hz) — stronger than the free mode. Plus Dust mode and a left/right speaker test.
Check that both speakers work.
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Deep clean starts when the ad ends.