Water Eject Tool is a very handy lifesaver. When water enters the phone, at first it seems that the speaker is damaged, but in fact, there is a droplet stuck inside. When you run this tool, the droplet vibrates under the pressure of the sound wave and comes out. Within a few minutes, the sound becomes clear again. That's why these days, when water enters the phone, users run the Water Eject Tool first, instead of going to the store.