If you iPhone has muffled speakers all of a sudden, the most common reason could be water damage to the speakers because your phone was either exposed to steam or came in contact with water in some other way. People mostly get muffled speakers after they take their phone with them in the shower to listen to the music and afterwards you notice a change in your speakers. The water gets seeped through tiny openings in the speaker region that causes damage to your device from inside. There is a way to fix your muffled speakers and this way is quite impressive. All you have to do is to download an app Sonic from Apple App store and your problems will be resolved. It’s the way that this App works that will allow you to expel the water droplets out of your device’s speakers. The app basically emits a sine wave at a particular frequency that makes the water come out of the speakers that you can clean later on.
After you download the app, you need to set the frequency somewhere between 160 and 170 Hz to make it most effective and then just hit play. The most effective frequency range is 165 Hz but you will need to see what works best for your device. You will see the droplets coming out of your device after you play this app and you can then just take a cloth and wipe off the water. This is quite a convenient way to fix your Apple device and works best with Apple watches but people have been using it for their devices with very positive reviews pouring in from all over the globe. If you are a victim of your device getting water damaged, try this app and see if it works.