iPhone 7 and iPhone 7 Plus are the first smartphones that are water resistant, they can only be destroyed in extreme conditions of prolonged exposure to water and at great depths. Apple Watch 2 is also water resistant, but for the smartwatch Apple has created an intelligent system to remove water from inside the speaker.
It is based on running a 165 Hz signal through the speaker, which has the role of eliminating any kind of water drops that would remain through it after immersion in the liquid. Although there is no such system for the iPhone 7, an application from the AppStore is capable of playing sounds at this intensity, so the final effect will be identical.
Sonic is the name of this application, and after installing it we can play sounds at any intensity, so we can play them including the 165 Hz ones. Although the iPhone 7 speakers are designed to keep water outside, if it gets inside, it stays there, but this application solves the problem extremely quickly and without much effort.
All you have to do is download the application and install it in your terminals, playing the sound at the intensity of 165 Hz, eliminating any of the speakers of the iPhone 7 or iPhone 7 Plus terminals. Those who have tested this application have seen how water is removed from the speakers, so you can try it too, as it is available for free download from the AppStore following this link.
"I found the resonant frequency of the water in the grille to be around 165 Hz. While the tone is playing, you will see little drops or bubbles bouncing out of the speaker, take a piece of absorbent material and dab them up as they come out of the speaker grille."
