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I have an iPhone 5 running iOS 10.2 and a 2015 Chevy Mailbu with Bluetooth capability for calls and streaming audio (non CarPlay).

The problem I have is when I am receiving calls (everything else works fine). When a call comes in and I answer it, regardless if I press the phone button on the steering wheel or the answer button on the phone, the iPhone immediately switches to its internal speaker I have to manually switch it back to the "Bluetooth headset" (car speakerphone) for the audio to work properly.

I have tested this in 3 different cars - the Chevy, an Infiniti and a truck with an aftermarket Kenwood radio. The problem is present in all three vehicles. I have also tested with a Windows Phone and and Android phone and both phones work with the cars properly so it's definitely a phone issue.

I have rebooted the iPhone, deleted the profile and re-paired with the radio and I have even reset the iPhone to factory default and re-paired it as if it was new. The problem persists no matter what I do.

Does anyone know what the issue is or what I have to do to solve it?

[Update] Problem still persists after iOS 10.3, didn't resolve the issue.

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    I have an Anker SoundSync in my truck and I have to do the exact same thing when answering a call. It's very frustrating and I haven't been able to find a solution yet, either.
    – fsb
    Jan 2, 2017 at 15:10
  • What version of iOS do you have installed on your iPhone 5?
    – IconDaemon
    Jan 2, 2017 at 16:12

1 Answer 1

Reset to default
-1

I think this will fix it :

Settings -> General -> Accessibility -> Scroll down to interaction section -> Call Audio Routing -> Choose headset

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    Welcome to Ask Different. Good answers provide supporting info as to why they are correct and/or will address the OP's question. See How to Answer for tips on providing good answers. You can edit your answer to include why you believe this will work. - From Review
    – fsb
    Mar 7, 2018 at 15:50

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