Develop Bugs

Bluetooth "HD Audio: AAC" doesn't work?

On my 6.1 plus running android Pie, connecting my bluetooth headphones that supports AAC doesn't seem to work.
In the bluetooth device options, the HD Audio: AAC is shown and enabled after the initial pairing, but disappears after reconnecting.
In addition, the codec in use as shown in developer options shows SBC and refuses to change to AAC.
And poweramp also says it's using SBC.
I know my bluetooth headphones do support AAC because on another device, that was the codec in use.
Is anyone else having this issue?

Android 9 Pie
ruifung said:
On my 6.1 plus running android Pie, connecting my bluetooth headphones that supports AAC doesn't seem to work.
In the bluetooth device options, the HD Audio: AAC is shown and enabled after the initial pairing, but disappears after reconnecting.
In addition, the codec in use as shown in developer options shows SBC and refuses to change to AAC.
And poweramp also says it's using SBC.
I know my bluetooth headphones do support AAC because on another device, that was the codec in use.
Is anyone else having this issue?
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Click to collapse
On my Moto X4 also have this same problem after upgrading to Android 9

I tried with my Nokia 6.1, it connects and keep the connection as AAC with a Sony XB40 and a Pioneer NEX5200, at every connection. However the Sony supports LDAC, and even if the ldac libraries are on the phone, it only uses AAC

Bluetooth on pie is 100% f**ked. Google broke it after the first beta release. It affects all devices, including their flagship pixel line.
Flash an 8.1 rom or get an iPhone. That's your options unfortunately.

Bluetooth codec, aptX-HD, AAC, LDAC, etc

Does the Nokia 6.1 (with Pie) support HD bluetooth codecs? Did someone tried to pair with sony or others headphones and check if LDAC is working?

I'm not much of an audiophile myself. I've never tested any of these out, but here's what bluetooth codec selection looks like in developer options.

jason2678 said:
I'm not much of an audiophile myself. I've never tested any of these out, but here's what bluetooth codec selection looks like in developer options.
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yeah but it seems it does not work, everytime you exit the option, it go back to default.

I tested a BT speaker Sony XB40 and a car stereo Pioneer NEX, and both have "HD Audio" in their bluetooth properties displaying "HD Audio: AAC". I cannot change it, I tried to change the codec in the dev option, but it does nothing.

I don't think the developer options are meant to be changed. I think they are there to show what the phone auto-selects when playing.
This screenshot is from another phone, while playing to an AptX device. I think it works the same way on Nokia.

Aptx settings won't save

Hello, as the title says everytime I connect my bt Earbuds I have ți manually select aptx from dev menu. Do you know how I can have them saved?
Thank you

Change name of your device in bluetooth and add "_NOAAC"
By som reason LG will always use aac over apt-x. By adding _NOAAC it skips aac codex and connects with aptx..

Hello, thanks for your reply. I did change the name, but it doesn't work..
Did I do something wrong?

You should ADD not replace xD
In example: i have headphones ATH-DSR7BT
then it should be ATH-DSR7BT_NOAAC
Personally i don't know if it's working. I didn't know that method and my headphones supports aptx HD

ShadoV90 said:
You should ADD not replace xD
In example: i have headphones ATH-DSR7BT
then it should be ATH-DSR7BT_NOAAC
Personally i don't know if it's working. I didn't know that method and my headphones supports aptx HD
Click to expand...
Click to collapse
It worked, thank you guys.
Another thing, how do I keep this setting saved? It always resets to (best effort adaptive bit rate)

These are setting for LDAC codec used mostly by Sony Headphones. If your headphones doesn't use LDAC, then you shouldn't worry. For the rest of codecs it doesn't matter.
As far as i know, Sony have app for their headphones, and that app will set everything properly.
So, these options should remain untouched.

ShadoV90 said:
These are setting for LDAC codec used mostly by Sony Headphones. If your headphones doesn't use LDAC, then you shouldn't worry. For the rest of codecs it doesn't matter.
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Click to collapse
I understand. Thank you ?

Audio Codec Settings

Does anybody know how to get the audio codecs to change from sbc to any other setting and have them stick?no matter what I do it reverts back to sbc.

The device say if you are using a bluetooth headset should support other codecs like aptx, LDAC etc.,
I use Sony XB series bluetooth headphone, the audio codec in developer options sticks to LDAC only if I choose the headphones connection for quality in the Sony app.....else by default it reverts to SBC.

JAMRZ69 said:
Does anybody know how to get the audio codecs to change from sbc to any other setting and have them stick?no matter what I do it reverts back to sbc.
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It will revert to SBC when nothing is connected. It will switch as soon as you connect an audio device. When I connect my Bluedio Victory, it switches to APTX on it´s own. The same applies to my car (also APTX) and to Galaxy Buds+ which use the Samsung Scalable Codec.

There's a setting within Developer mode to switch which codec to use

buddy66 said:
It will revert to SBC when nothing is connected. It will switch as soon as you connect an audio device. When I connect my Bluedio Victory, it switches to APTX on it´s own. The same applies to my car (also APTX) and to Galaxy Buds+ which use the Samsung Scalable Codec.
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I had 2 harmon kardon Onyx 3 Bluetooth speakers connected and no matter what I did it switched back to sbc tried every codec nothing stuck,I would change it and as soon as I brought up the section in developer options it was back to sbc.

JAMRZ69 said:
I had 2 harmon kardon Onyx 3 Bluetooth speakers connected and no matter what I did it switched back to sbc tried every codec nothing stuck,I would change it and as soon as I brought up the section in developer options it was back to sbc.
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It seems that the Harman/Kardon Onyx 3 does not support any other codec than SBC. The phone won´t let you change the codec and revert back to SBC if the speaker does not support it.

Well Thank you for that information I did not know that.

Question LDAC support

Trying to enable LDAC codec while using my WH-1000XM4 headphones.
But there are only SBC and AAC available.
Headphones connects via AAC by default.
So I've tried going to Developer options and change codec to LDAC there, but after choosing it resets back to the previous value.
Can only switch between 2.
Any options to enable LDAC for POCO F3?

Try to install Sony Headphones app and change your Sound Quality Mode to Priority on Sound Quality.

adik1144 said:
Try to install Sony Headphones app and change your Sound Quality Mode to Priority on Sound Quality.
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Click to collapse
I have both Music Center and Headphones apps set as 'Priority on Sound Quality' and also 'Prioritize LDAC' is checked, anyway, I see headphones are connected via AAC in Bluetooth settings.

Are you on MIUI rom? Click on yours XM4 headphones in bluetooth device settings and tick HD Audio (or sth like that)

adik1144 said:
Are you on MIUI rom? Click on yours XM4 headphones in bluetooth device settings and tick HD Audio (or sth like that)
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Well, that's everything I have in the settings

reset ur headphone once it happens

maviroxz said:
reset ur headphone once it happens
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Are you sure reset should help?

ojquintessence said:
Are you sure reset should help?
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ofc I have mark 4/5