Bluetooth codec problem

[Kristoffer97]

When I try to connect to my car stereo (pioneer mvh-x580dab) via Bluetooth, my phone (xz2) defaults to using the aac Bluetooth codec which apparently is not supported by my car stereo, because I get no audio unless I switch to the SBC codec in developer options. This is an annoying and tideous operation that needs to be preformed every time I connect to the stereo, is there a way to set a standard codec for each Bluetooth device or similar?

I previously used the xperia xz with this stereo with no issues, so I assume it's the phone that's messing something up

[ErzengelGabriel]

You can actually change the codec? If I try to do that it changes back to another codec. I'd like to try aptx but it just won't let me, as it turns back to Aac directly. 

[Kristoffer97]

That's probably because your audio device doesn't support aptx. When I connect to my car receiver it defaults to AAC which is not supported on the receiver and I think SBC is the standard base codec all devices support. I'm sure sbc will work for you as well, but AAC Will provide higher bitrates and better quality. If I choose any other codec (on my car receiver) than sbc, I get no audio whatsoever. 

[rkhaotix]

I'm facing this very same issue! My previous phone (Motorola Moto Z) was connecting without problems with my Honda Civic's (2017) sound system. When I got the Xperia XZ2 things started to get weird (no sound, no music info on the display, etc) so I started to tweak the developer option and switched the codec to SBC and I got audio again on my system but in the moment I disconnect the bluetooth and reconnect it the AAC codec is used again which, of course, isn't supported by my car's sound system. I wonder why Sony just allow us the forcibly select the codec avoind the switch back to the default/optimal settings?

Now I need to use my phone plugged in via USB cabe in order to use Android Auto so I can listen my music, which is quite annoying! Please Sony help us!

[Kristoffer97]

The thing is, in the description on my pioneer mvh-x580dab it says AAC is supported. I get the same problem on my gf's FH-X840DAB which is a more expensive 2-din receiver which also supports AAC. this is getting really annoying tbh... @sony help us plz

[Erik78]

Same here 🙄

[emiliongo007]

I dont exactly know what happens but since I updated to Android pie, I believe the codec or the quality chances automatically, at leas this happens with my MDR-1ABT, I can't tell if I get a significant drop in audio quality or if the Phone tries to modify the equalizer but it ends ruinning the awsome sound I got from my headphones, I am desperate now, so I have to tweek the audio so it matches the original sound of the headset, but also tweek again so I get normal audio for other speakers, I have the option that supposedly learns from your devices and sound use deactivated

[Strampke]

There are two options:

• Settings -> apps & notifications -> App info -> tap 3 dots upper right corner -> show system -> scroll to Bluetooth -> tap storage -> clear cache & clear data
  • restart phone
  • pair devices and test
  • report back if it helped

• Don't know if this applies to XZ2 too, but you can try. Some reported it helps, some say it doesn't.

   Unpair both devices from each other.

  1. Go to Settings -> System -> About phone -> tap multiple times on "Build number" until you enable "Developer options"
  2. Go back to Settings -> System -> Developer options -> Networking -> Bluetooth AVRCP Version -> Choose AVRCP  1.4 or 1.5
     
  3. Restart your phone
  4. Pair devices and test.
  5. Report back if it works or not.