Hello guys !
I just updated my MIUI ROM from Android 8 to Android 9. Since I have this one, my Bose QC35 II connected via Bluetooth uses the SBC Codec, which delivers a bad quality comparing to AAC. I tried to change this via the developer options, but when I set to AAC it always comes back to SBC. When I was on Android 8, I had the AAC.
Do you know how can I change that ? I'm on MIUI 10.1.1.0 Global
Thanks a lot, hope my english is understandable
I didn't find a solution, always on SBC Codec which the sound quality quite bad. If anyone has a solution
Isn't Aac a iPhone/apple thing....?
Anyways you can force a specific output mode in developers settings.
My mi8 on global beta defaults to aptx when using my Bluetooth headset.
Stoffl_ said:
Isn't Aac a iPhone/apple thing....?
Anyways you can force a specific output mode in developers settings.
My mi8 on global beta defaults to aptx when using my Bluetooth headset.
Click to expand...
Click to collapse
No it isn't, it's a classical codec. I tried to force it, but it always goes back to SBC, here is my problem !
What I meant is that aptx is superior in every way.
But I guess the BT device your using is aimed at iphones and doesn't support aptx ?
Maybe try and switch to global beta and check if the issue was fixed.
Eozum said:
No it isn't, it's a classical codec. I tried to force it, but it always goes back to SBC, here is my problem !
Click to expand...
Click to collapse
Same thing on my mi mix 2s. While everything works just fine with an Nvidia shield and Android pie. So it's xiaomi fault. I'm Very disappointed because SBC is really inferior.
Try developer mode!
Already tried on dev mod, doesn't change anything. When you set on AAC, the phone simply doesn't care, hope it will be corrected in an update !
Now I am having the same problem and couldn't find any solution. In Developer options, my arrangements revert to old ones when close, they don't stick. I have Android 8 MIUI 10 Xiaomi Mi6. Via Magisk Manager, I flashed codecs and necessary modules to my phone but nothing's changed. when i connect my JBL Free to my phone, SBC logo right next to the earphone's name is there. Before I lose my mind, someone please help me! I am inexperienced to this complex Android world :crying:
I'd start by posting in the correct MI6 subforum
You can use PowerAmp, it can force better audio codec (by cable and BT).
Have you tried it ? It doesn't work
Just a quick update, since the last update 10.2.3.0, i've got the AAC when using my Bose QC-35 The sound quality is waaaaayyyy better than before. Thx Xiaomi !
Eozum said:
Just a quick update, since the last update 10.2.3.0, i've got the AAC when using my Bose QC-35 The sound quality is waaaaayyyy better than before. Thx Xiaomi !
Click to expand...
Click to collapse
Oh great! Now I am on MIUI 10 MiRoom 9.3.14 custom rom. Can we apply 10.2.3.0’s bluetooth codecs to my rom? I do not want to switch my rom but if It is the only solution I will switch
vidanj said:
Oh great! Now I am on MIUI 10 MiRoom 9.3.14 custom rom. Can we apply 10.2.3.0’s bluetooth codecs to my rom? I do not want to switch my rom but if It is the only solution I will switch
Click to expand...
Click to collapse
I don't know,, you should maybe wait for the next update of your ROM
Eozum said:
I don't know,, you should maybe wait for the next update of your ROM
Click to expand...
Click to collapse
I didn't receive BT fix with my new update and I dont believe I will I bought Sennheiser Momentum True Wireless Earbuds and I rarely have stutters thanks to aptX but if codecs were good I would have perfect connection with these earbuds.
I'm afraid you just have to turn on BT in order to change BT CODEC
Related
Hey guys,
I'm running freedom os and recently got a pair of mdr-1000x's. The headphones support aptx and aptx-hd, as does the ROM. Is there a way to determine what codec is in use over bluetooth? Everything sounds amazing, just wanting to make sure I get the best bang for buck.
It's working for me. I have the LG-HBS-780 BT neckband set and was able to tell it works by trying it on 2 different devices. My Moto X Pure doesn't have AptX enabled but FreedomOS 2.9 does. The sound difference was incredible!! I don't have ARISE / Viper4Android installed, decided it wasn't needed.
also for me with m1bt philips
lastest beta 8 from oxygenos
developper option, network, lastest choice is support hd aptx/aptx, check if enabled
regards
Yep there is noticeable difference! (Changed from Open Beta 8 to 4.1.5)
joemoule said:
also for me with m1bt philips
lastest beta 8 from oxygenos
developper option, network, lastest choice is support hd aptx/aptx, check if enabled
regards
Click to expand...
Click to collapse
I'm assuming this toggle is available only on Beta 8? I'm on 4.1.5 Freedom OS and I'm not seeing it under dev->network.
trentonite said:
Hey guys,
I'm running freedom os and recently got a pair of mdr-1000x's. The headphones support aptx and aptx-hd, as does the ROM. Is there a way to determine what codec is in use over bluetooth? Everything sounds amazing, just wanting to make sure I get the best bang for buck.
Click to expand...
Click to collapse
My own MDR-1000x work fine in beta8 BUT when WiFi is also active might sometimes have lost packets (and sound cracks), that gets fixed if I disable WiFi.
Quality is definitely better than on default SBC but is still clearly inferior to a wired connection (as long as you are using a good FLAC as a source). So I am waiting for AndroidO and LDAC (which 1000x does support :good: )
If you're on an open beta > 8, or a Freedom CE build based on a >OB8 build it should be working. Stable Freedom is just based on the stable OOS builds and it does not work. I found a magisc module that added the drivers, but I wasn't convinced it worked right so I gave up on it.
If you use a catlog reader you can search for codec while you're playing audio through blutooth, it should say aptx or SBC. If it says SBC then aptx is not working.
ignitionnight said:
If you're on an open beta > 8, or a Freedom CE build based on a >OB8 build it should be working. Stable Freedom is just based on the stable OOS builds and it does not work. I found a magisc module that added the drivers, but I wasn't convinced it worked right so I gave up on it.
If you use a catlog reader you can search for codec while you're playing audio through blutooth, it should say aptx or SBC. If it says SBC then aptx is not working.
Click to expand...
Click to collapse
Was able to look at the logs and see SBC. I'll look at the magisk module. Thanks for the heads up.
Hi guys,
I have a question concering LDAC on OOS 5.0 or other custom roms.
I just bought me some 1000xm2 Headphones and thought i can just update my Phone to Oreo and will be able to get some high quality bluetooth music. But it looks like LDAC isnt working. Someone mentioned libaries are missing. U can choose it on the bt audio settings but it wont work.
So is there a workaround for this problem or any custom rom that supports LDAC?
Thx in advance
geE68
Anybody?
gee68 said:
Hi guys,
I have a question concering LDAC on OOS 5.0 or other custom roms.
I just bought me some 1000xm2 Headphones and thought i can just update my Phone to Oreo and will be able to get some high quality bluetooth music. But it looks like LDAC isnt working. Someone mentioned libaries are missing. U can choose it on the bt audio settings but it wont work.
So is there a workaround for this problem or any custom rom that supports LDAC?
Thx in advance
geE68
Click to expand...
Click to collapse
Hi,
Apparently LDAC codec in OP3T Oreo ROM is working, just it displays wrong information on developer settings
Just now I try my luck to find 1000XM2 but instead of that i found 1ABT, since that one is also LDAC capable so I tried that
Guess what, the Bluetooth codec show in developer settings is show wrong
aptx and aptxHD doesn't included inside the ROM, but LDAC does loaded (see the logcat I captured at attachment, first one is aptx and aptxHD can't load due to lib missing, second one is LDAC is indeed working properly)
But still I do hope that xda would bring this issue up since this is the serious matter that Qualcomm did put OnePlus 3 and 3T on aptx codec enabled device, but then they didn't implement due to "cause prohlem"? This sounds weird for me
Ok, thx for your answer, will try it 2morrow.
Cheers,
geE68
I have noticed this is a widespread issue and I've decided to raise it. This needs to be fixed and Huawei should stop ignoring this problem. The Bluetooth is basically crippled and locked to SBC. I've tested multiple devices and all exhibited this behaviour. Why is it ignored? Are all the reviews fake?
https://www.youtube.com/watch?v=x-sifkojUqw
i read that Bluetooth options in pixel dont stick too. so it must be some wierd oreo crap. you cant even change gpu renderer. it always defaults back. best way to handle that is to chat with huawei support and check it out.
I don't use Bluetooth very much but it appears to be the same for the regular Mate 10 as well. I'm currently using my virtual desktop so I could not test if after changing the setting in developer mode does it stick after a reboot?
this confusion is due to a lack of follow-through. all oreo devices have this "issue". it's not an issue at all. if a connected bluetooth device supports these codecs, the best one will automatically be selected. it is not limited to huawei devices. this is normal and does not affect functionality. you should take down this thread so no one throws any fits for no reason.
Well mine switches to aptX automatically when I connect to aptX-compatible devices. However you are correct that I cannot manually change it in developer settings.
Further testing has shown this issue not to be an issue, I've managed to successfully connect to an APTX device and the codec was selected. Video removed. Apologies for this confusion.
perrin21 said:
Further testing has shown this issue not to be an issue, I've managed to successfully connect to an APTX device and the codec was selected. Video removed. Apologies for this confusion.
Click to expand...
Click to collapse
Doesn't matter, it will still randomly switch to loudspeaker and the quality will still be terrible.
tr1cky1 said:
Doesn't matter, it will still randomly switch to loudspeaker and the quality will still be terrible.
Click to expand...
Click to collapse
I don't have any issues regarding Bluetooth for now, haven't really tested aptx I think, but it worked fine otherwise. And never switched to loudspeaker or so
Sent from my HUAWEI BLA-L29 using XDA Labs
perrin21 said:
I have noticed this is a widespread issue and I've decided to raise it. This needs to be fixed and Huawei should stop ignoring this problem. The Bluetooth is basically crippled and locked to SBC. I've tested multiple devices and all exhibited this behaviour. Why is it ignored? Are all the reviews fake?
https://www.youtube.com/watch?v=x-sifkojUqw
Click to expand...
Click to collapse
It's not crippled, it's buggy.
SBC and aptX have high noise floor and specially on SBC, it causes some deformations to the Audio.
AAC is totally broken.
DeeZZ_NuuZZ said:
I don't have any issues regarding Bluetooth for now, haven't really tested aptx I think, but it worked fine otherwise. And never switched to loudspeaker or so
Sent from my HUAWEI BLA-L29 using XDA Labs
Click to expand...
Click to collapse
Good for you, people here all have Bluetooth problems:
https://www.android-hilfe.de/forum/...oth-problem.853624-page-19.html#post-10970173
I have no issues with my Bluetooth headphones, the Sony WH-1000NX2
The highest quality of transmission is selected automatically, LDAC, that's 990 kbit/s
It's the best Bluetooth can do in the Audio section.
The Sony headphone App confirms the LDAC connection
i am trying my friend's MDR 1000x. i tried both SBC and LDAC. Now I can't go back to LDAC. Help please
Aac not working on p20 pro, works fine on the pixel 2
Bull****.
AAC No longer works on my head unit and my Bose QC35 Headphones.
It worked perfectly before 8.0.0.128 update.
Factory Reset does not work, nothing works. It refuses to use anything else than ****ty SBC.
tr1cky1 said:
Good for you, people here all have Bluetooth problems:
https://www.android-hilfe.de/forum/...oth-problem.853624-page-19.html#post-10970173
Click to expand...
Click to collapse
they are reporting issues with many devices on that forum. android has always had some issues with bluetooth. huawei is no exception. my samsung and sony devices were the best by far. i think it's because of improvements that they make to the android system.
Anyone on b142? Can you comment on if the Bluetooth audio quality is better?
Can anyone confirm if b142 solved sbc problem? I think aac is stilo broken, but sbc quality?
Kekkolekko94 said:
Can anyone confirm if b142 solved sbc problem? I think aac is stilo broken, but sbc quality?
Click to expand...
Click to collapse
Solved.
I don't have a clue what you guys talking about with all those 3 and 4 letter/digit combinations of names but i feel I've gotta share i use Bluetooth all day long for different kinds of profiles and i mean all day long, and to say this doesn't fail nearly as much as nougat did would mean i imply it does fail to a certain, however small, degree, which isn't even close to being the case, so... But i do notice the in band ringing settings don't stick just like they don't stick in my Oreo S5...
I've had Android phones since 2012 and the Huawei mate 10 pro is the only one with Bluetooth issues. Constantly dropping parts of songs when connected to my mazda 6. Infuriating to say the least. The most expensive phone I've ever had....
Is Aptx codec enable on Oreo?
Every time I change it it keeps reverting to SBC but my headphones are aptx HD compatible....any ideas?
That's because the Note 8 supports just Aptx and not Aptx HD
Iradj said:
That's because the Note 8 supports just Aptx and not Aptx HD
Click to expand...
Click to collapse
Thanks for your reply but not relevant because it should work fine hd or not....
And it's the same whith the Sony codec, none sticks and notice that when you change the codec in the developers zone and then you just start Bluetooth without any device paired it reverts to SBC automatically. Someone is able to change it?
madjose said:
Is Aptx codec enable on Oreo?
Every time I change it it keeps reverting to SBC but my headphones are aptx HD compatible....any ideas?
Click to expand...
Click to collapse
In fact, at least for me, as soon as it connects to a paired device it auto selects the compatible codec.
For my MacBook pro it's AAC, for the Sennheiser Momentum is aptX, for the Bose SoundSport wireless is again AAC.
tossero said:
In fact, at least for me, as soon as it connects to a paired device it auto selects the compatible codec.
For my MacBook pro it's AAC, for the Sennheiser Momentum is aptX, for the Bose SoundSport wireless is again AAC.
Click to expand...
Click to collapse
Do you have a exnos Note 8?
I dont get it....my headphones are aptx and connect right whith the LG v30 so the problem is whith the Note...
Even whith a Sony headphones the LDAC don't work....always revert to SBC.
Don't know if it's a bug or samsung don't allow them to work .
Does anyone whith N950F got it working?
madjose said:
Do you have a exnos Note 8?
I dont get it....my headphones are aptx and connect right whith the LG v30 so the problem is whith the Note...
Even whith a Sony headphones the LDAC don't work....always revert to SBC.
Don't know if it's a bug or samsung don't allow them to work .
Does anyone whith N950F got it working?
Click to expand...
Click to collapse
Yes, I have a N950F Exynos.
tossero said:
Yes, I have a N950F Exynos.
Click to expand...
Click to collapse
Thanks....I will try a factory reset maby it solves.
So when you connect Bluetooth it changes automatically to the right codec?
You don't do nothing?
At least im not the only one whith this problem....but no solution....lol
madjose said:
Thanks....I will try a factory reset maby it solves.
So when you connect Bluetooth it changes automatically to the right codec?
You don't do nothing?
Click to expand...
Click to collapse
Yes, nothing at all, it just happens.Between 2 connections it switches back to SBC.
I hope that you will sort it out
Hi guys any idea to fix it ? I'm in the same case
I made a factory reset and still the same....
madjose said:
I made a factory reset and still the same....
Click to expand...
Click to collapse
What BT device are you connecting to? For my Sony WH 1000x I have to select LDAC manually as it uses Aptx by default.
Edit
Look here you will see a solution in this short thread
https://forum.xda-developers.com/galaxy-note-8/help/oreo-bt-audio-codecs-t3777511
jah said:
What BT device are you connecting to? For my Sony WH 1000x I have to select LDAC manually as it uses Aptx by default.
Edit
Look here you will see a solution in this short thread
https://forum.xda-developers.com/galaxy-note-8/help/oreo-bt-audio-codecs-t3777511
Click to expand...
Click to collapse
Thanks but the codec menu dont appears to me whem im pairing the device and i can change it manually in dev options too but keeps reverting to SBC
I even went to retailer to try whith others headphones and sound bars and it's always the same result SBC...
So I know for sure that's my note 8 problem
My Headphones
madjose said:
Thanks but the codec menu dont appears to me whem im pairing the device and i can change it manually in dev options too but keeps reverting to SBC
I even went to retailer to try whith others headphones and sound bars and it's always the same result SBC...
So I know for sure that's my note 8 problem
Click to expand...
Click to collapse
Did you try Developer Options.
I checked also I don't see BT codec option in the BT settings. Only available from Developer Options.
Edit: for LDAC I do get this option in BT settings so don't need to use Developer Options. Also Note 8 does not support Aptx HD.
jah said:
Did you try Developer Options.
I checked also I don't see BT codec option in the BT settings. Only available from Developer Options.
Edit: for LDAC I do get this option in BT settings so don't need to use Developer Options. Also Note 8 does not support Aptx HD.
Click to expand...
Click to collapse
Yes i am using developers option and my headphones are aptx not aptx hd like is supose note 8 to have but dont activate....always revert to SBC
I tryed an app call "media codec info" and aptx is not apering in the list so i dont know if is realy activ or not....
Hi, after april update its working good....
Diference in quality sound is huge...thanks to who try to help me !
Do you have anything else connected to your phone via Bluetooth, at the same time? Like a Samsung Gear watch, Plantronics Headset, ...
If the second device is not aptx compatible the phone will stay in sbc on both/all devices.
I had the same problem but it got solved as soon as the Sennheiser Momentum was the only device connected to the phone by Bluetooth.
After disconnecting all other devices, stop then restart bluetooth. It should connect automatically to your headphones on aptx.
Hope this helps.
You can't enable it on a device that doesn't support aptx. if the device supports aptx it will be enabled automatically in developer settings. When you disconnect it will go back to SBC
You have to turn off the "Dual Audio" option in settings... Will work after that
Hi, I understand the P20 Pro hardware supports aptx and aptx HD butdoes this work out of the box or does a codec need to be installed? I can see it in the Bluetooth section of the developer options but I can't select anything but SBC.
Thanks
jccrawfo said:
Hi, I understand the P20 Pro hardware supports aptx and aptx HD butdoes this work out of the box or does a codec need to be installed? I can see it in the Bluetooth section of the developer options but I can't select anything but SBC.
Thanks
Click to expand...
Click to collapse
Do you have compatible head phones?
belloni said:
Do you have compatible head phones?
Click to expand...
Click to collapse
Does the option only change when connected to a compatible Bluetooth receiver? I thought my car receiver was compatible but if that's the case then I guess not.
I had the same issue with regards to Bluetooth defaulting to SBC, after some reading I discovered that it was possible to change the Bluetooth mode on my headphones by holding a button combination, it went from prefer connection to prefer sound quality and unlocked aptx and LDAC on my Sony MDR-1000X. So the P20 Pro is definitely capable of it without any additional codecs.
Maybe read the manual for your device and see if it also has something like this.
Highspeed123 said:
I had the same issue with regards to Bluetooth defaulting to SBC, after some reading I discovered that it was possible to change the Bluetooth mode on my headphones by holding a button combination, it went from prefer connection to prefer sound quality and unlocked aptx and LDAC on my Sony MDR-1000X. So the P20 Pro is definitely capable of it without any additional codecs.
Maybe read the manual for your device and see if it also has something like this.
Click to expand...
Click to collapse
I have this problem too.
On my OnePlus One i can change the audio codec, it should not depend on the bluetooth headphones connected. My Mpow Wolverine sounds way better with the One Plus One, on the P20 pro it sounds like sh*** ;any suggestion?
I have headphones that are both SBC and AAC compatible.
Paired to my pixel, aac works great.
Paired to p20, it sutters, skips and is stuck on SBC
I noticed when there is an actual icon just after the Bluetooth device name of my headphones that says 'APT-X', in the phones Bluetooth settings.... My previous Huawei P9 didn't have it or support it so did surprise me a little as I didn't look into it when switching.
On the P20 you can change the BT codec (in developper settings) but the settings doesn't stay...
killtoo said:
On the P20 you can change the BT codec (in developper settings) but the settings doesn't stay...
Click to expand...
Click to collapse
Yes, same to me.
It's a bit frustrating, seems like i have to buy another Bt headphone, also another usb c headphone.. but that is another problem
Same **** here, guys.
PowerBeats 3 are in AAC with Pixel and S9, but in SBC with my P20 Pro. And I also hate that EQ is not avaliable.
I have emailed Huawei, but those dumb idiots are asking for IMEI and system version... They don't realise, that it's a wide problem....
Dear Dmitriy,
Thank you for contacting Huawei.
We are sorry to hear that you are experiencing this issue. Please provide information as below for further assist:
1. Full Name
2. Contact Number
3. IMEI & Build Number screenshot (This can be found by going to Settings> System> About phone> This will help us analyze the phone.)
Should you have further enquiries, please do not hesitate to contact us at 800-852-6666. Our lines are open Mondays to Sundays from 9.00AM to 9.00PM, including Public Holidays. Alternatively, and for further support, please visit https://consumer.huawei.com/sg/support/
Thank you and best regards,
Carol
Huawei Support Team.
Huawei Consumer
DISCLAIMER:
This e-mail and its attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
------------------- Original Message -------------------
From: - no_reply
Received: 5/13/2018 6:17 AM
To: Huawei SG Support; [email protected]
Subject: Mail Support
SubjectName:Complaints
CategoryNameroduct quality
Usernamemitriy
Country:Singapore(新加坡)
Product:clt-l29
Purchase Date:2018-04-10
Contentear Huawei Team, I have purchased my P20 Pro during a first sales week at your store in Singapore. In general, I am happy with it, but, I have COMPLETELY confused with your audio experience. PROBLEM: I own two pairs of headphones: Bose QuietComfort 30 and PowerBeats 3. I don't understand why I am not able to tweak EQ over the bluetooth! S7 was able to do it, old Sony Z2 was able to do it too, but 1000$ phone by Huawei with triple camera and AI can't provide damn equalizer! I don't need any processing by Dolby, I just want to add some bass, because I am lisening to EDM, not a classical music, I don't need a analytical audio presentation. Then, codec selection is broken! PowerBeats are not able to get their native AAC, and Bose are working in SBC mode. What a shame! I can't tweak audio, and I have to listen compressed nonsense. I didn't expect that I will have to deal with such problem in the 1000$ phone. Please, release the software update, I would like to have at least eq.
Click to expand...
Click to collapse
Has anyone got aptx HD working? Is it much better sound quality than ACC?
Thinking of buying some Sony 1000xM2 which are aptx HD compatible but if the sound quality isn't any better, I won't waste my money
walters2001 said:
Has anyone got aptx HD working? Is it much better sound quality than ACC?
Thinking of buying some Sony 1000xM2 which are aptx HD compatible but if the sound quality isn't any better, I won't waste my money
Click to expand...
Click to collapse
My Sony MDR100's use LDAC and sound great. They have a built in EQ profile that kicks in once they are powered on according to reviews. I could of sworn it was using APTX HD at first but I was mistaken.
Jonathan-H said:
My Sony MDR100's use LDAC and sound great. They have a built in EQ profile that kicks in once they are powered on according to reviews. I could of sworn it was using APTX HD at first but I was mistaken.
Click to expand...
Click to collapse
Ah, I didn't know the P20 Pro supported LDAC.
Just got to wait for my Bose to sell on eBay now
Tried on a few different headphones here. Seems apt-X is working, AAC is not.
110 firmware.
My p20 pro is on order and not arrived yet, but what you should try is:
1. Clear bluetooth connection of remembered device
2. Enable Developer settings, go to settings->about phone->click on 'buid number' a bunch of times (8?? from memory)
3. Go to: Settings->developer settings->the bluetooth sections and select whatever you want to be the normal
4. Re-connect your bluetooth device. If its compatible then it will default to your previous selection.
At least, this is how it works on my S8, Zenphone 3 deluxe and Oneplus 3T, with my Sony WH-1000XM2 and audiotechnica headsetsand WI-1000X.
But they all have custom roms and i have never had a Huawei so im not 100% sure.
In theory the Bose QC 35 ii headphones support both SDC and AAC but I can't select AAC in the developer settings. Are others having the same experience?
jccrawfo said:
In theory the Bose QC 35 ii headphones support both SDC and AAC but I can't select AAC in the developer settings. Are others having the same experience?
Click to expand...
Click to collapse
Yeah I get the same issue with the bose headphones but ldac works when I connected to a sony speaker
Im in the process of buying some earphones that supportthe newer aptx low latency codec as I will be using them for gaming aswell. We know p20 pro supports aptx and aptx HD but does it support aptX LL
stephen.brader said:
Yeah I get the same issue with the bose headphones but ldac works when I connected to a sony speaker
Click to expand...
Click to collapse
Yeah just received my Anker SoundBuds Curve headphones and it shows aptX next to the connection in the bluetooth settings. I guess AAC isn't supported as it's not listed on Huawei's tech specs page- https://consumer.huawei.com/uk/phones/m/p20-pro/tech-specs/ I also don't see aptX LL on there so I supposed that's also not supported
I've changed nothing. Only installed .128 Firmware with funky Huawei. When I connect my Ultrasone Sirius Bluetooth Headset there is automatically a aptx-Icon near the name. Nothing to change in developer-settings. See my picture on instagram:
https://www.instagram.com/p/BjJm7k2D1pb/?taken-by=mmeidl78