Open Speaker Cleaner: https://toolster.net/speaker_cleaner
This walkthrough follows the Water program from its first pulse to the end of the countdown, then uses Check sound to play the test chime. Watch the controls and progress ring before trying the tool yourself.
The page also offers a separate Dust and deep clean program. Sound playback cannot diagnose a damaged speaker or guarantee a repair. The tutorial shows the tool's controls and audio sequence, not a before-and-after measurement of a real wet phone.
Music: "Local Forecast - Elevator" by Kevin MacLeod (incompetech.com), licensed under CC BY 4.0