First off I want to say that I am not an Apple or Android engineer, but I am human and these things happen.
I’m gonna jump right to it. If you’re having issues with water in your speaker, download this app Sonic right now.
After downloading, set the Hz to 165 and press the “PLAY” button at the button. You can adjust the frequency (Hz) by swiping up or down.
You will gradually hear your speaker quality improve. After a few seconds you should hear the difference, so test it out by playing a song or video.
Not totally there? No worries. Go back to the app and press the water drop icon, in the center of the app below the Hz amount. After a few seconds, select the “STOP” button and test again.
And that’s it! Your phone speakers should be good as new.