I have a Skoda Octavia 2.0 Tdi 150 Hk Hatchback Dsg 2014 with Amundsen system.   I use a Huawei P20 lite smartphone.  Bluetooth is always on, and most of the time when I enter the car it automatically connects and starts playing music.  I use different apps, Spotify, Tunein radio, an app that plays audiobooks, and of course the phone.   Sometimes though, it doesn't connect, but still starts playing on the phone - i.e. not through the Amundsen. It's like it realize it's in the car but doesn't connect fully.  Also sometimes it will disconnect, very often at the moment I connect the charger.  I charge the phone through a standard cigar-lighter-to-USB thingy - it works fine except like I said, something this cause the bluetooth to disconnect.  

 

I connect with the phone to a lot of other bluetooth devices such as speakers, headphones and my stereo in the house, and never have dropouts there, so I don't think the phone is the problem as such, but it does have the latest bluetooth tech, such as "LE" which appears to be a low-power version of bluetooth. I can't find any way to change that on the phone though?

 

The phone is sitting in a mount on the dashboard.  When it disconnect I just disable-enable bluetooth on the phone, then it reconnects.

 

Alteranatively :- since I plug the phone into the charger anyway . there's a USB2 plug under the climate-controls - does that work both to charge the phone and as a data link? Maybe I could just use this instead?  Just a thought.

Pretty sure this is due to the fact you're using a Huawei. I've got an LX1 as my work phone and it does the same thing but the Samsung and my wife's iPhone never do this.

 

Mine always works again after disabling / enabling BT on the phone as well.

Hey thanks for the reply!  Not really what I wanted to hear of course, but kinda expected it might be this. At least it gives a pointer in a direction. I'll dig some more in a Huawei forum. 

No worries. Please update the thread to let me know if you find a solution!!

Ime using a huawei p20 pro in my 2016 vrs and have no issues at all ,it connects quickly and seems to stay connected .

Hm, interesting. Maybe it is limited to the Lite version.  It connects fine and fast, btw, it just disconnects again, randomly.

 

On 03/03/2019 at 22:09, rcd said:

Alteranatively :- since I plug the phone into the charger anyway . there's a USB2 plug under the climate-controls - does that work both to charge the phone and as a data link? Maybe I could just use this instead?  Just a thought.

 

That USB port is data link and charging. On my 2018 MY, the power to it starts when I unlock the car and cuts off one minute after I lock the car.

There's a possible solution but it's hidden in the settings menu. 

 

But you need to be able to access the developers mode to get it. 

 

Settings > Software Information > Build Number (tap it 5 or 6 times) and it will then activate the developers mode in the Settings menu, go back to Settings and scroll down to the bottom of the screen and you'll see it, in there are options regarding Bluetooth connectivity. 

2 hours ago, Gasconman said:

 

That USB port is data link and charging. On my 2018 MY, the power to it starts when I unlock the car and cuts off one minute after I lock the car.

 

In the meantime I tried this out. Actually it only works for charging, not for streaming of sound, and when I connect it the car goes into USB mode, so effectively this is completely useless.

 

20 minutes ago, TheWanderer said:

There's a possible solution but it's hidden in the settings menu. 

 

But you need to be able to access the developers mode to get it. 

 

Settings > Software Information > Build Number (tap it 5 or 6 times) and it will then activate the developers mode in the Settings menu, go back to Settings and scroll down to the bottom of the screen and you'll see it, in there are options regarding Bluetooth connectivity. 

 

Good find!!  I completely forgot about developer mode. (I used to hack around with Android, installing third party roms and what not, but eventually found the best solution for me was the stock option). Anyway, when enabling developer mode I get 4 BT options:
BT audio codec

BT audio sample rate

BT audio bits per sample

BT audio channel mode 

Everything is set to default except the audio codec which is set to SBC.  I'll try setting that to default as well and see if that makes any change.  Other than that, what can do to fix this problem? 

Edit: Actually i can only change some of those settings, and they don't "stick" - i.e. they are reset when i go back into the menus.

 

Try changing:

 

Bluetooth audio LDAC to balanced (606) rather than outright quality.

 

Bluetooth AVRCP to 1.6

Bluetooth audio codec to aptx or other. 

Bluetooth audio channel to stereo. 

5 minutes ago, rcd said:

Edit: Actually i can only change some of those settings, and they don't "stick" - i.e. they are reset when i go back into the menus.

 

 

Bluetooth must be active for them to stick. 

Ah ok, that explains it. I'll try it tomorrow when I'm in the car. Thanks!!

12 hours ago, rcd said:

 

In the meantime I tried this out. Actually it only works for charging, not for streaming of sound, and when I connect it the car goes into USB mode, so effectively this is completely useless.

 

Actually, it works for charging PLUS data transfer. With the Android Auto app and your phone connected via that USB port, you can use the MP3 player on your phone, plus use your contacts for calls. Or you can do the same using Bluetooth. You have a choice.

On older units (MIB1) the USB socket is almost useless. It only delivers 0.5A for charging and no data link. 

 

I was able to change the AVRCP version on my Bluetooth settings in Android developer options, found version 1.4 works better that newer ones.

13 minutes ago, TDIum said:

On older units (MIB1) the USB socket is almost useless. It only delivers 0.5A for charging and no data link.

Ah, right, sorry. I didn't realise there were two different versions. You're right, having power only with no data is pretty useless

18 hours ago, TheWanderer said:

Try changing:

 

Bluetooth audio LDAC to balanced (606) rather than outright quality.

 

Bluetooth AVRCP to 1.6

Bluetooth audio codec to aptx or other. 

Bluetooth audio channel to stereo. 

 

I find BT audio codex aptx and audio channel, but nothing about AVRCP. Where do I find that?  I am looking under Developer Options.

Hopefully you'll see this in settings.

5 hours ago, TheWanderer said:

Hopefully you'll see this in settings.

 

 

No, mine looks a bit different:

 

 

Are you sure yours is a P20 lite?  This is my system settings:

Try an update to Android 9.0, I'm using a Samsung Galaxy S8 on Android 9.0 and when I link it to the car it performs faultlessly, but I have tweaked the Bluetooth settings to balance the connection quality over sound quality. 

 

https://www.technobezz.com/how-to-fix-huawei-p20-pro-bluetooth-issues/

Edited 6 April, 20197 yr by TheWanderer

I am already on the latest OS available for this phone. I know I could sideload Android 9, but i think I'll just wait for it to happen automatically.  Thanks anyway