Problems with voice during CarPlay calls since iOS 11.3

Another poster said this problem is fixed with 11.4. Poster was member of beta program. Can anyone else with this problem confirm it's fixed with 11.4?

I've got this problem, too. First of all, I thought that it's my fault (It's a new car) but as I attached my wifes (still 11.2 ) iPhone, everything worked fine. (Setup: Seat Leon, Seat Sound System, iPhone 6s Plus 11.3 (15E216) T-Mobile Germany).

BTW: I can hear everything fine. The bug only seems to be in the upload direction

I also can confirm these problems, phone calls currently are impossible in CarPlay mode here:

iPhone 7 – tested on iOS 11.3 (15E216), iOS 11.4 (15F5037c and 15F5049c) connected to a KENWOOD DMX7017DABS with an original Apple Lightning to USB Cable.

iPhone 6s – also tested on iOS 11.3 (15E216) connected to a KENWOOD DMX7017DABS with an original Apple Lightning to USB Cable.

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A wireless Bluetooth connection always works flawlessly, though.

And by the way: A Samsung Galaxy S8 connected via Android Auto to this KENWOOD DMX7017DABS with its OEM cable works properly, too.

I need CarPlay in its full range of functions – urgently. I bought this KENWOOD device in order to navigate without further external equipment!

Thanks in advance for your empathy :-) ...

Hello all,

Same issue I noticed about a couple weeks ago. I have a Kenwood DDX9904S, Bluetooth works fine all apps work fine except for phone calls. When talking people complain that they cannot understand me or it sounds like alien talk. I have tried new iPhone lightning cable, resetting and different iPhone same IOS 11.3 and about everything else I can think of. This is a problem. To talk while in carplay you have to disconnect the lightning cable then Bluetooth kicks in and you can talk fine.

Same here on VW Golf with Discover Media 2017, on different iPhones (SE, 6S, 7) after updating them to iOS 11.3.

Older Discover Media infotainment in my wife’s VW Touran works fine. Looks like iOS 11.3 broke CarPlay audio call quality on several but not all infotainment systems.

Come on Apple, fix it quickly!

I have the same issue as everyone else except I'm running on iOS 8.4 on a 5s. When connected to CarPlay (Kenwood 573s headunit) I can hear the caller ok but my voice to them is incoherent. If I disconnect the lightning cable from the phone during the call, the phone switches over to bluetooth and everything is fine.

I've tried different cables and also networks (LTE and 3G). In CarPlay mode it's a no go 9/10 times. Strangely, sometimes it did work but I can not find any visible pattern. After reading all the comments I have noticed most are Kenwood users but not all.

I'm stumped.

Hey Everybody,

In my case, sadly, iOS 11.4 Beta 3 doesn't fix the issue with the phone calls in my Seat Leon.

I'm also happy to hear that for some people iOS 11.4 was the solution so the problem is getting closer to resolving.

Good news, yesterday I had a good experience with Apple Support where they confirmed that its an issue they already know about. Unfortunately, they don't know yet what the exact cause is as the problem can manifest in multiple ways. They asked me to test calling with different phone settings and sim cards to rule everything out. After completing the tests and ruling everything out, I was asked to run a diagnostics on the Apple Carplay system while calling. Following that, I had to run diagnostics on my phone and return the files to Apple.

I now have a permanent contact from support and he will call me back in four days regardless if there are any updates/news as he said he depends on the information he receives from the software engineers.

"Unfortunately, they don't know yet what the exact cause is as the problem can manifest in multiple ways".

I think this sums it up perfectly. The consensus from those that have done the 11.4 beta update seems to be mixed. Add to this, my iPhone 5s running the 3 year old 8.4 OS exhibits identical issues. Sooo, this tells me Apple really hasn't figured this one out yet and whatever is causing this is not any particular OS version but by a combination of items (perhaps even hardware related) which is making this a difficult bug to crush, now 3 years in the making.

It's not the car's problem. I have the same problem in my VW Golf 2016. I am able to ear perfectly the person I'm talking to but on the other side, they are having a hard time hearing me.

Apple please fix it!

Same problem. iphone 6. 2018 aftermarket headunit from Kenwood with Apple CarPlay. Problem started with ios 11.3.0. Android Auto in same vehicle with same headunit does not have the problem. Bluetooth calls via iphone outside of Apple CarPlay does not have the problem. Problem IS APPLE.

for the love of God man, don’t do any troubleshooting it is a complete waste of time. And to the person he’s talking about Bluetooth, Bluetooth has absolutely nothing to do with CarPlay it’s not even a factor. I think they talked about using Bluetooth and Wi-Fi a while ago with Volkswagen but Volkswagen never rolled it out I seem to remember seeing an ad for Mercedes that it was coming. CarPlay uses the cable only. The only fix for the sound problem is to go to the latest beta version... if you Google it you can figure out how to join the beta program it’s pretty painless. Aside from that, you can wait for the next official release. The good news about what’s happened with the beta is that not only has the strange repeating noise gone away but an echo that I never knew was there but all my friends have told me he has now disappeared has also disappeared.

I've tried every iteration of 11.4 that was available through Dev and Beta channels and only one release resolved my issue (11.4 beta 3). Even when on 11.4 beta 3, the call seemed to have very low volume on the receiving end. The latest release seems to have reverted back to the original issue.

"Handsfree is being disabled once CarPlay starts." On my Kenwood unit, I actually get this notification on the screen when I plug my problematic phone in.

Io ho il tuo stesso problema sulla mia vw golf 7.

Hai risolto il problema?

Settimana prossima devo portare l’auto in concessonaria per l’aggiornamento del firmware del CarPlay.

I have the same issue since upgraded to IOS 11.3. The calls with Bluetooth were fine! Only having issue with the calls using car play with robotic, fragmented audio. Tried to reset, forget the car play and re installed, the issue persist! This must be a iOS 11.3 problem. It was working fine prior to the upgrade. Please fix this issue ASAP!