What's the best Android app for fixing muffled phone speakers after water exposure?

Speaker Cleaner, Water Eject is an Android utility developed by Techlab Studio that targets a common smartphone annoyance: speakers compromised by water or debris. The app operates by generating low-frequency sound waves, which create vibrations intended to push out liquid or loosen dust particles from speaker grilles. This approach is particularly useful in real-world scenarios, such as after accidental spills or exposure to humid environments, where users might notice distorted or muted audio. Reviews indicate that many are pleasantly surprised by its effectiveness, with one user noting, 'I was actually so surprised when it actually works.' The interface is straightforward, typically featuring one-tap activation for different cleaning modes, making it accessible for quick troubleshooting. However, the app does have limitations. It is ad-supported, and users report that advertisements can be frequent and intrusive, which may detract from the experience. Additionally, its efficacy can vary; for instance, if the obstruction is minimal or the water damage is severe, the app might not provide a complete solution. Despite these drawbacks, for minor issues, it serves as a convenient first step before considering professional repair. The balance of a free, easy-to-use tool with occasional ad interruptions makes it a pragmatic choice for routine maintenance.