So now you know the base amplifier is utilized for talking, and the back is utilized for clamor cancelation. Be that as it may, the top front and top back mouthpieces aren’t only for clamor cancelation. They additionally make the sound all the more clear when you’re recording a video, utilizing Snapchat, or visiting with Siri.
When you are far away, and talk into your telephone the sound gets got effortlessly because of the two additional receivers. There has additionally been a move up to the speaker for a more agreeable sound experience.
Source : providr