This curious hole has been present since the fifth generation of Apple devices and is located between the flash and the lens on older models; or to the right (forming a triangle) on the latest iPhone models, such as the iPhone 11. This hole is not on this type of smartphone by chance, it has a function: it is a rear microphone.
This hole serves a function similar to that of a microphone. In addition, to the main microphone, next to the bottom speaker, at the bottom (where we connect the device to charge the battery), there is also this small micro on the back of the iPhone.
Starting with the iPhone 7, by removing the hole of the headphone jack of the iPhone (which from then on are connected in the same slot as the charger), a second row of holes appeared in the lower left area of the mobile device. These new holes perform the function of the main microphone, which is used for phone calls. However, with the aim of reducing background sounds, this miniature microphone serves so that the person we talk to on the phone can hear our voice without any interference.
In addition, it is this rear microphone records sound during Facetime video calls. However, the iOS operating system also uses it when you record sounds using the Voice Memos application or when you activate Siri.
HOW MANY MICROPHONES ARE THERE IN AN IPHONE?
It depends on the model, but there are usually three: one on the back for recording video audio, one on the bottom for speakerphone calls and other voice recordings, and one in the earpiece for phone calls.
SO, DID YOU KNOW THE FUNCTION OF THIS HOLE?
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