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      05-18-2020, 04:44 PM   #1
backstabber
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Call quality

Just took delivery of our 2020 Z4 M40i last Friday. One thing we noticed right away is the the poor phone call quality. The person on the other end of the call noticed voice distortion and lots of background noise.

We came from a 2017 M240i convertible and never had issues with call quality.

This is with an iPhone X. We have CarPlay enabled.

Anyone else experiencing this with their Z4? Are we just too picky? Or bad microphones?

Last edited by backstabber; 05-18-2020 at 05:56 PM..
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      05-18-2020, 06:18 PM   #2
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Turns out there's a microphone sensitivity setting that's only available if you use the native BMW user interface instead of CarPlay.

I turned the setting all the way down and there is no longer distortion.

Last edited by backstabber; 05-18-2020 at 11:05 PM..
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      05-18-2020, 08:55 PM   #3
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Thanks for sharing
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      05-18-2020, 09:06 PM   #4
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Also, the passenger often talks facing the interior mirror (where many other cars have the microphone) - the microphone is in the door frame, so looking towards their exterior mirror makes them more audible. (I know, probably not exactly your issue, but since we are on the topic... I assume it’s the same on both 30i and M40i in the US).
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      05-20-2020, 09:55 AM   #5
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Quote:
Originally Posted by backstabber View Post
Just took delivery of our 2020 Z4 M40i last Friday. One thing we noticed right away is the the poor phone call quality. The person on the other end of the call noticed voice distortion and lots of background noise.

We came from a 2017 M240i convertible and never had issues with call quality.

This is with an iPhone X. We have CarPlay enabled.

Anyone else experiencing this with their Z4? Are we just too picky? Or bad microphones?
Same issue here... Never solved it but I have the mic sensitivity on full... Might give the opposite a go and see if that works...

It equally bad in Bmw idrive or CarPlay, to the extent I cut call's short to avoid repeating myself to people!

It's fine when parked with roof down or low speeds however, seems to be anything above 40mph ish
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      05-20-2020, 03:23 PM   #6
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Quote:
Originally Posted by Tickler View Post
Same issue here... Never solved it but I have the mic sensitivity on full... Might give the opposite a go and see if that works...

It equally bad in Bmw idrive or CarPlay, to the extent I cut call's short to avoid repeating myself to people!

It's fine when parked with roof down or low speeds however, seems to be anything above 40mph ish
I am going to play with the setting more. I don't think it needs to be on lowest level. I will turn it up one notch at a time until distortion comes back again. The setting was in the middle before I messed with it.
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