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Buzz noise


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Can anyone tell me what the "buzz" noise is, that I sometimes hear during an ambient recording?  I first thought that it was when the target phone was receiving a text message but I know that's not the case.  I then thought that it could be when the target device switches between cellular network to wifi networks, but now I don't think that's it either.  I'm wondering if its when the device receives a message from a hidden texting app.

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Guest Ricardo

Hi There,

The buzzing sound could be caused by interference that's coming from speakers or a mic. Meaning to say that the target device could be placed near these electrical devices, which is causing this. 

Hope this helps.

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How close would the device have to be?  I'm hearing it consistently in recordings.  Even when the device is being carried.  I also can't see the applications used, use remote camera, or view websites so I have no idea if it is related to an app or something that I can't see. 

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