iPhone Xs Bluetooth audio quality

I connect my phone to my car to listen to music. I primarily use Apple Music. iPhone XS has a problem with audio quality. The quality keeps dropping for a few seconds, then switches to high quality for a few seconds, and this keeps going like that. The issue is with treble. It's as if the 10kHz gain is reduced and then brought back up. Kinda like years ago when you tried to stream music and started with low quality and became high quality after enough buffering...


This doesn't happen with the iPhone 7s we have, running iOS12. Car is 2014 BMW 3 series


I have gone through the full on/off cycle with the car, phone, and forgetting/pairing bluetooth again without success.


Any suggestions?

iPhone XS, iOS 12

Posted on Sep 29, 2018 11:21 AM

Reply
116 replies

Jan 26, 2019 11:26 AM in response to daniel_rie

Hello from Germany.


Same Problem here with my iPhone SE and iOS 12.1.3 .


I am pretty annoyed about that, because I wanted to play music in the car without any cables and installed a bluetooth receiver (Grom Audio BT3) in my car. And now I have this ugly noise instead of music.


I also hear that it is because of bad bandwidth. If there is only one instrument playing, it gets all the bitrate and sounds kind of nice. But if voices and other instruments added to it, the bandwidth isn't enough anymore and the noise starts.


I also tried that workaround with disabling wifi. Switched it off in settings and also reconnected to the bluetooth receiver - didn't work for me.


I wonder, what could cause the problem, because bluetooth is not a new invention. There was a time when things were just working. Now there has to be every year a new software and everything needs to be different. The worst for me is - you are kind of forced to the new OS, because it is downloading and then annoying until you finally install it. Way back to old OS? not passible. What a pain.

Feb 15, 2019 11:50 PM in response to Dogcow-Moof

Feb 2019 and the problem persists. Since it does not seem to affect every car or speaker I assume it‘s a combination of iPhone (x/xs/8) and some bluetooth chpisets (which are used by many different car / speaker manufacturers). Someone would need to find out which chipset is used in the affected car models..


Other possibility would be that actually many more devices are affected but you just dont hear the quality drop on cheaper speakers. I have the Harman Kardon system in my 3 Series BMW and it’s just impossible to listen to music over BT with the quality going back and forth.


It still has to be something Apple has broken since the Problem did not exist up to iOS 11 and in older iPhones.

Mar 30, 2019 12:00 AM in response to Deejay74

Thats probably not related. For good audio quality over Bluetooth both the receiver and the transmitting device need to support either AAC or AptX codec. iPhones have AAC support and Android devices usually AptX. So if you’re streaming Bluetooth from an iPhone to an Android device the codecs are not compatible and transmission will fall back to the SBC codec which sounds terrible.

May 10, 2019 6:58 AM in response to murumoto

Hi,


I am experiencing the same issue with the high and low pitches missing, however the issue occurs for me when my IPhone X (iOS 12.2) is connected by wire to the stereo in my car and playing Spotify or ITunes.

I have a 2018 Audi A3 with a Audi Sound System. I got Audi to run an analysis and they didn’t find any issues in the car and told me that they think the issue is that the receiver is protecting the sound system from the signal coming from the phone and an issue with Apple CarPlay.

So it seems like the same issue, but with the difference that I seem to be the only one in this forum who experience it when using Bluetooth and also wired.


Hoping for a solution to the issue!

Jun 14, 2019 12:33 AM in response to murumoto

Wired or wireless, using the lightning to 3.5mm dongle or bluetooth, gives poor audio quality from my Xs MAX. I'm not sure when it started to occur, I assume from day 1 that i received my new phone. The music feels "flat". Now the gotcha: Using the 6s from my wife, and the music is plentyfull again. Got this issue when connected to my car radio (bluetooth), also when using monitors at home (wired). Again, issue is gone when using the 6s in both places... if you ask me, its hardware related...

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iPhone Xs Bluetooth audio quality

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