iPhone 4S high pitch noise

I've noticed a suddle but noticable high pitch noice whenever the iPhone is connected to a stereo via the headphones jack. This is especially noticable in my car. The noise starts when any audio output comes on (Siri, unlocking phone, Music app, Spotify app) and goes away shortly after audio is terminated. My old iPhone 3GS does not have this problem even with the new iOS 5 update.

Has anyone noticed this? I can't listen to music on my iPhone in the car because it's annoying.

Thanks,

Dawid

Posted on Oct 16, 2011 9:33 AM

123 replies

Nov 28, 2012 3:00 AM in response to Dawid

I have a Ford Mondeo from 2009 and i got the static noise when changing from iPhone 4 to 4s. I bought the Kensington Noise Reducing Car Audio AUX Cable and it completely fixed the problem.

Dec 7, 2012 9:23 AM in response to Dawid

Hi Everybody, this issue has been fixed on iPhone 5.

Oct 18, 2014 12:56 PM in response to Dawid

SOLUTION: Press the button on the right by the earphone jack on top of the phone AND the wake up button at the bottom of the phone on the front AT THE SAME TIME. Hold for severals seconds. This is a 'hard reset'. Should fix the noise problem. This will not erase your downloaded apps, contacts, notes, etc. This solution is straight from the mouth of Apple.

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iPhone 4S high pitch noise