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I just conducted a tiny experiment with the original headset that comes with Nexus One: I plugged it into the phone, expecting the phone built-in microphones to be switched off, replaced by the microphone on the headset.

I was disappointed to see that the voice input behavior of the system didn't change: The phone seems to continue picking up sound from the built-in microphone(s).

So, I thoroughly covered the headset's microphone with tape and tried again...

Still, no change. The Nexus One's built-in microphone are fully enabled.

This is disappointing because I really need to disable the Nexus One's built-in mics, so that I can use a different microphone instead.

Is there a way to accomplish that?

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which icon do you see in the notification bar, headphones or headset? – devnul3 Sep 19 '11 at 20:44
up vote 1 down vote accepted

Maybe disabling the noise cancellation feature might work..

Get a rooted file editor first, then from "/system/build.prop" change the "media.a1026.enableA1026=1" to "media.a1026.enableA1026=0"

Then do a reboot. See if your problem is solved. I simply suspect the android's mic always gets enabled for the purpose of noise cancellation during calls/voice input.

REMEMBER! I do not hold responsiblilty for any failure. I suggest you make a backup and everything when you try this.


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You are the only one who answered, so accepting. – Android Eve Aug 19 '12 at 19:58
@Android Eve, Did you accept it because it worked or for being the only answer alone? – Mars Jun 14 '15 at 3:50

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