turn off internal microphone iphone

I also have this need and after reading this thread my reason/requirement is different. Here is the reason I need to disable all internal microphones on my iPhone 6; I am using an extra microphone to record extremely sensitive (nearly silent) audio and need to eliminate all background and external sound and ambient noise. I have plugged in an external microphone into the phone then taped over with cotton packing the back, bottom mesh and microphone next to the headphone jack. I continue to get high fidelity external audio in the recording even though the external microphone is completely isolated with a physical shell to block all external sound. My recordings are picking up the sounds I require from the microphone but it is polluted with a mountain of external audio which is clearly coming from the phone.

The problem is that there are 3 mics.

Bottom mic that is used for voice memos and phone calls.

Front mic (in the receiver mesh) that is used for Siri, Speakerphone and frontfacing videos.

There's also a rear mic for rear-facing videos.

What exactly are you trying to disable?

speedskis777 wrote:

No suggestions? Seems like a relatively simple idea... turn off all mics? 😕😕😕

It's not generally something that one can easily do on phones. Perhaps if you explained what you're trying to do by turning off the mics, someone might have some alternate suggestions.

Hold on, I think I've got it. Settings>Siri>Voice Feedback>Control with Ring Switch. Then, put the phone on mute using the Mute switch. It seems to work the way you want.

Edit: never mind, you're using a headset. Won't work.

Hi Xchange04, did you ever figure out how to disable the internal mic? I have a similar problem. I am trying to broadcast using BeOnAir with an external unidirectional mic, but the internal mic picks up all the ambient noise and defeats the purpose of the external mic.

There's a much easier way to make Siri beep. Settings>General>Accessibility>Vibration>Off. Siri will still provide voice feedback but that has nothing to do with the mic.

No, voice feedback comes from speakers, not the mics. You turn off the speakers by turing the volume all the way down.

I did not. It is apparently not possible.