Short answer
Yes — for water trapped in the speaker grille, which causes most muffled sound after rain, showers or splashes. Low-frequency sound makes the speaker membrane push droplets out; you can often see them appear on the mesh.
Water eject works because a speaker is a tiny pump. When it plays a low tone (around 150–200 Hz), the membrane moves back and forth in long strokes and pushes air — and any water in the grille — out through the holes. It's the same principle Apple uses in Apple Watch's Water Lock.
What water eject fixes
- Muffled or "underwater" sound after getting wet
- Lower volume after a shower, rain or a splash
- Crackling caused by droplets on the membrane
- Loose dust sitting on the mesh (partly)
What it can't fix
- Water inside the phone's electronics
- A blown or physically damaged speaker
- Corrosion from salt water or sugary drinks left for days
How to tell if it worked
Play the same voice video before and after. Better: run a left/right stereo test and a slow tone sweep — both channels should sound equally clear with no rattles.
