A free app for Android, by DCZT
If you’ve ever experienced the unfortunate incident of accidentally dropping your phone in the water and encountered a muffled sound from the speakers despite drying it, then fret not! This application can help you get rid of the excess water that might have entered the speaker grilles, causing the muffled sounds.
To use, install the app and turn your smartphone face down. Increase the volume all the way up. If you still have your earphones connected to the device, you must unplug it for the app to fully work. The app then begins to do its job so you can enjoy your speakers in their best quality again.