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Microphone not working when plugged to AUX on iPhone 15 Pro Max

I recently upgraded to an iphone 15 pro max. With my iphone 13, I used to have a lightning to AUX cable in my car which enables music/ sound to play the iphone through the speakers and enable me to take calls handsfree. I replaced this with a USB- C to AUX cable (to suit the iphone 15) and the music/ sound plays through the sound system fine, however the microphone no longer works (i.e. answer calls and person on the other side cannot hear me). It also has disabled Siri- if I say "hey Siri" this isn't recognised. Please help how to enable the microphone


[Re-Titled by Moderator]

Posted on Nov 1, 2023 7:36 PM

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Posted on Nov 30, 2023 3:11 PM

I have this problem too. I have iphone 15 and I have now tried 3 different aux-usb c cord options and nothing works... I need to respond hands-free to text messages and make phone calls while driving. This is so frustrating! Apple needs to figure this out

60 replies

Nov 12, 2023 12:45 AM in response to BronteAP

to me this is sort of the expected behavior when I connect a headset it expect the headset to have a mic and disable the build in one like it mutes the build in speakers, most devices both phone and tablets in my experience behave that way, computer too.

guess the phone is unable to detect that there is no mic in what is connected to it

Nov 12, 2023 12:07 AM in response to BronteAP

I’m having the same exact issue. I went through all the hassles of buying new cable converters for the new iPhone 15 pro since I have an older car with no Bluetooth. Spotify and music etc sounds fine but if I answer a call the recipient cannot hear me. I can hear them talking but the microphone doesn’t pick up sounds on my end. Can’t really be plugging in and unplugging my phone while driving, and speaker is too quiet when on highways with rough surfaces.

Feb 20, 2024 10:30 AM in response to BronteAP

I can only tell you from my point of view, but I HAVE NOT found an answer or a solution. I use cheap wired headphones without a mic to listen to music or videos because I am hearing-impaired. I still cannot listen and talk on my phone when I’m plugged in to it. THIS ALSO HAPPENS ON MY IPAD-MINI AS WELL! I filed a complaint with Apple and suggest more people do that- these community comments are not getting much action. To me, if this isn’t resolved, I may need to rethink my commitment to Apple products in the future.

Nov 22, 2023 3:16 PM in response to BronteAP

I’m having the same issue. I just upgraded from a 12 Pro Max to a 15 pro max and I also lose mic functionality when I plug a usb-c to 3.5 mm audio cable between my new phone and my older car.


when I plug in such a cable I am prompted to answer whether the accessory is headphones or “other”. The first try I selected headphones and that’s when I found that music and audio for calls works, but the mic does not.


i tried another usb-c to 3.5 mm cord and this time when prompted I answered “other”. Now the audio works for music, but audio AND mic don’t work for calls.


I agree that it’s a huge pain to lose functionality on a new phone. I’m hoping also that it will just take a software update to fix. Worst case scenario is that there is a limitation with USB-C where it can’t alter the function of the microphone through the jack.

Dec 14, 2023 9:51 AM in response to BronteAP

I have the same problem with my Iphone 15 Pro. I do most of my calling in my car so this Apple 15 Pro was a real waste of my money and time. I want my Iphone 13 Pro back. Did I mention there’s a bunch of bugs and crashes with the 15? Yes, there are. Before you buy a 15, make sure these bugs are fixed….., especially before you trade in.


[Edited by Moderator]

Microphone not working when plugged to AUX on iPhone 15 Pro Max

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