Audio out via the USB in car? - Huawei P20 Pro Questions & Answers

Hi
I've received my P20 Pro this week and am loving the phone so far. However, one big issue remains that i can't seem to get my head around - how to play audio from the phone through my non-Bluetooth car stereo?
I previously had an iPhone 6 where this was easy; plug the phone in to the stereo via USB and it would simultaneously charge and play music from the phone through the car stereo.
But when I plug in the P20 Pro via the same USB port, I can't seem to get audio coming out. I know it's possible - as obviously headphones plug in to the same USB-c port - so is there something I have to turn on or toggle to get it to send audio out?
Any help much appreciated. Thanks.

slangking said:
Hi
I've received my P20 Pro this week and am loving the phone so far. However, one big issue remains that i can't seem to get my head around - how to play audio from the phone through my non-Bluetooth car stereo?
I previously had an iPhone 6 where this was easy; plug the phone in to the stereo via USB and it would simultaneously charge and play music from the phone through the car stereo.
But when I plug in the P20 Pro via the same USB port, I can't seem to get audio coming out. I know it's possible - as obviously headphones plug in to the same USB-c port - so is there something I have to turn on or toggle to get it to send audio out?
Any help much appreciated. Thanks.
Click to expand...
Click to collapse
Check you don't have this option enabled in developer options?

danifilth4king said:
Check you don't have this option enabled in developer options?
Click to expand...
Click to collapse
Thanks - I looked and it's not checked. In fact, the headphones work when you plug them in, so it is allowing audio out with certain connections.
It's just when I use the charging lead to connect the phone to the car stereo (USB) - nothing happens. It doesn't even charge, and says "check USB" on the front of the stereo. if I play music when it's connected, it just comes out the phone - which obviously it wouldn't do if it was connected to the stereo.
Do I need a specific audio lead, rather than just the basic charging one that comes with it?
Coming from an iPhone background, it's just the same lead... so I'm struggling to see why this won't work either.

My case was huawei p20 pro generate so much noise and jitter during playing through USB audio connect to Helix dsp, it solved by changing USB speed mode from full speed mode to high speed mode on the Helix dsp USB setting. As my iPhone was working fine on both mode. In case if you can try to change setting on your car stereo system. Try to consult with your car stereo manufacturer.

Hi Slangking, did you already find a solution to use P20 (pro) audio over USB in your car? I'm having the same issue as you, went from the iPhone 6 to p20. Just a cheap USB stick works, and I could even remote spotify on my iPhone with my steer trough USB. Changing the USB output in the developer settings to audio source didn't work
- EDITED -
I did some research and mounting your memory card as a USB Mass Storage will work like explained over here, but I still can't find out how this will work for the internal storage...

UPDATE
I found something called WIRELINQ: Smart Android USB Converter Cable for Car Stereo. Started as a kickstarter project, but are now able to buy. Will try that one out.

I got one of these and found I can't get anything to play through the stereo, the audio plays on the phone speakers but the track info displays on the stereo screen and the steering wheel controls also work, I can disable USB audio streaming via the dashlinq app which makes radio player within dashlinq work properly.. but nothing else works.. have you had any luck?

Thanks for your reply. You are a step ahead of me. I have the Wirelinq cable but couldn't get it to work, not even the track info on my cars stereo display. It recognise the Wirelinq cable, but not my phone. I am in contact with GROM and even tried to install a new firmware update (which I was able to install myself by connecting the cable to my computer), so there last message was:
This is issue of the phone USB Audio output in software not working correctly as standardized by Android's AOSP. You will have to contact Huawei to get support and resolve it on phone's software end.
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Click to collapse

brumemail said:
Thanks for your reply. You are a step ahead of me. I have the Wirelinq cable but couldn't get it to work, not even the track info on my cars stereo display. It recognise the Wirelinq cable, but not my phone. I am in contact with GROM and even tried to install a new firmware update (which I was able to install myself by connecting the cable to my computer), so there last message was:
Click to expand...
Click to collapse
Did you ever get anywhere with this? I'm a new P20 Pro owner (also having switched from iphone 6) and wanting to crack this issue. Thanks.

Not sure if there is a solution. iPhones behave differently when connected to stereos, just like an usb stick. Android devices don't, unfortunately. I am using an AUX cable with the usb-c adapter in my husbands car, or bluetooth streaming in my car.

Bleutooth receiver to AUX
fell.matt1602 said:
Did you ever get anywhere with this? I'm a new P20 Pro owner (also having switched from iphone 6) and wanting to crack this issue. Thanks.
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Click to collapse
No, it didn't work. Maybe it will if GROM will come out with an update. I've returned my cable and have bought a bluetooth to AUX receiver adapter on eBay for just a few dollar. This actually works very well, you plug the bluetooth adapter in your USB and the cable in your AUX and you can listening wireliss music on each app through bluetooth. The downside is that you won't be able to see your track details, no remote from your steer and the quality is different. But you can still charge you phone with a normal USB cable while listening. It's not a solution, but I got used to it now.

Not a bad idea with the bluetooth to aux!

all the pugs said:
Not sure if there is a solution. iPhones behave differently when connected to stereos, just like an usb stick. Android devices don't, unfortunately. I am using an AUX cable with the usb-c adapter in my husbands car, or bluetooth streaming in my car.
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Click to collapse
iphones actually don't behave like a usb stick when connected to a stereo. the music is still played on the iphone, but the sound is streamed to the stereo. controls on the stereo actually control the playback on the iphone itself.
with android, to play audio over usb, you need to use mass storage mode, which will behave just like a usb stick.
ios can output digital audio over it's usb cable, which the stereo can receive.
android can output audio through usb-c, but i don't think that it can be used to output audio over the usb cable like iphones can. it might be some protocol that iphones use and android phones don't, but technically it should be possible.

Just stumbled upon this thread as I am in the same situation. Basically, I have a P20 Pro and a Huawei Mediapad M5 Lite that are behaving exactly the same..i.e they cannot play audio from USB to car stereo's USB ports. The internal media can be browsed and played via car stereos interface but you cannot stream music via USB from phone (say Spotify) to car stereo.
USB audio streaming works if I enabled ANDROID AUTO at the car stereo and installed ANDROID AUTO in the phone/tablet. You might ask why not just settle for this setup?
I can, butI I hate so much the AA's "Swipe to Unlock" lock and the changes in the UI when AA is active.
What I want is the plain/original phone interface (without AA) and all audio routed via USB.
Bluetooth, I know is an option, but again, it would be nice if this (USB) can be solved. It seems possible, I think. If AA can switch USB audio streaming on, can other apps or workaround/reverse engineering not?
BTW, i tried playing with the Developer Options, USB Configuration as "MTP or Audio Source" --- no luck here

Just bought a Kenwood DDX6906S receiver for my 2013 GMC Sierra I cannot get anything to work via USB. USB debugging enabled. I feel like I've been going in circles. any help would be super appreciated, TIA

Related

[Q] Unable to play music in my car stereo with USB cable

Hi
I am unable to play music in my car stereo via the USB cable. It says that mass storage mode will onlly work with memory card
All the reasons why Android was so much better than iOS seem to be fading away one by one. I miss GingerBread.
Other than using the headphone jack RCA to RCA cable, is there any way I can use the USB to play music? What is this MTP and who supports it??
Oh, and my car stereo doesn't have Bluetooth capability, hence the question.
Thanks.
Farhad.
farhadtarapore said:
What is this MTP and who supports it??
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Click to collapse
The MTP USB protocol was designed to solve the problem of allowing both the device and the USB host to have access to the file system at the same time. Unlike USB Mass Storage (where the support comes from drivers in the OS), MTP typically has to be integrated into the applications that communicate with the device. Since widespread MTP use parallels KitKat adoption, you're unlikely to see support in any automotive head unit that's more than a year old. And given the time needed to develop, test, and certify automotive electronics, it may still be a year or more before it becomes a common head unit feature.
Using the headphone jack and controlling playback from the phone is one viable work-around. The other is to just throw all your tunes on a cheap USB stick. It's a little bit of a hassle to keep two devices synced with your music library if it changes often, but your options are pretty limited.

One cable for in car audio and charge - possible?

The talk around the removal of the 3.5mm headphone jack from some phones has got me thinking... is it possible to have a cable in my car that I plug into the OnePlus3 USB C port, that then provides power AND audio out? I don't need DASH charging (but reasonably fast charging would be good), and I have a 3.5mm jack in my car, so is this possible, and if so, what would I need to connect from USB C to power and audio our (3.5mm)?
Why? My car has Bluetooth audio, but it's a pain. When I start the car it's not instant on. Sometimes it decides not to connect. Sometimes audio drops out. I also have another phone for work, but my car only allows a single bluetooth connection, so when I'm travelling for work, I'd like my work phone connected to Bluetooth for calls and my OnePlus3 connected via 3.5mm for audio. BUT I don't want another cable to connect. I want this simple and quick!
Any thoughts?!
is the BT in your car an embedded head unit?
you could get an FM-BT transmitter device like these:
https://www.amazon.com/s/ref=nb_sb_...transmitter&sprefix=bluetooth+fm+tran,aps,332
which you could use instead of, or in addition to, your current BT solution
---------- Post added at 10:43 AM ---------- Previous post was at 10:38 AM ----------
as a side note, what you're asking for is definitely POSSIBLE, but likely a bit expensive and may not be SUPPORTED by your sound system.
Yes, my car has Bluetooth in the factory fitted head unit. Its just that Bluetooth tends to be a pain. Takes 30seconds to connect after I start the car, etc. And as my car also has 3.5mm input I was just thinking there may be a more elegant solution using USB C.
T39andcounting said:
Yes, my car has Bluetooth in the factory fitted head unit. Its just that Bluetooth tends to be a pain. Takes 30seconds to connect after I start the car, etc. And as my car also has 3.5mm input I was just thinking there may be a more elegant solution using USB C.
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Click to collapse
like i said, there is (since USB-C can carry audio, even video and ethernet etc), but i'm pretty sure your car's head unit won't support it.
check out the BT-FM transmitter products i suggested.
2x4 said:
like i said, there is (since USB-C can carry audio, even video and ethernet etc), but i'm pretty sure your car's head unit won't support it.
check out the BT-FM transmitter products i suggested.
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Click to collapse
Yeah, I get that, and like I said, my car has a 3.5mm input. So I need USB C -> Power and Audio via 3.5mm output. Something like the adaptor that comes with the Moto Z: http://www.androidcentral.com/moto-zs-usb-c-headphone-jack-adapter
But, I'd like to split the USB C off to provide power input as well as audio out. So I was thinking something like a USB C hub. But not sure if that would still provide the USB C Audio out as well as enough power to charge the phone.
T39andcounting said:
Yeah, I get that, and like I said, my car has a 3.5mm input. So I need USB C -> Power and Audio via 3.5mm output. Something like the adaptor that comes with the Moto Z: http://www.androidcentral.com/moto-zs-usb-c-headphone-jack-adapter
But, I'd like to split the USB C off to provide power input as well as audio out. So I was thinking something like a USB C hub. But not sure if that would still provide the USB C Audio out as well as enough power to charge the phone.
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Click to collapse
you could try that adapter + a USB-C hub
I've used my Nexus 6P with USB-C hub to use mice/keyboard/flashdrive while charging my phone via USB-C, i assume OP3 is no different since it has USB-OTG as well (won't charge faster than 1.5A via the hub though)
What you need is a USB C DAC. Here. use an OTG cable from your phone to a hub. Plug the DAC into the hub. Audio will route out USB to DAC and then you can plug a 3.5mm cable into the DAC for high quality audio. The otg will charge the phone at the same time.

Razer phone 2 not detecting earphones nor Android auto

I recently got my USB-C port replaced by Razer because it was charging right and it out of nowhere stop syncing to Android auto. Now it charges fine but my car still won't recognize the phone, it will for a sec and then it disconnects. Also when I plug my earphones in, the audio still plays through the speakers, in option pops up to change the USB preference but it won't do it.
Dapper Dan66 said:
I recently got my USB-C port replaced by Razer because it was charging right and it out of nowhere stop syncing to Android auto. Now it charges fine but my car still won't recognize the phone, it will for a sec and then it disconnects. Also when I plug my earphones in, the audio still plays through the speakers, in option pops up to change the USB preference but it won't do it.
Click to expand...
Click to collapse
One thing is that some USB-C headphones don't have a AMP/DAC built-in. This is a common problem with Razer Phone 2 users, as it doesn't have one inside. So, if your headphone adapter or USB-C headphones don't have one built-in it won't work. 2, seems like Android Auto doesn't like some USB cables. Try some troubleshooting from at the "My Android Auto app isn't working" page on the Android Auto help page.
I was experiencing relatively the same thing. I tried cleaning and tightening the usb-c port on my phone. Didn't help. So I tried cleaning out the usb-c charging cable, the end that plugs into the phone. Problem solved. It works fine now, for the most part. Still will disconnect from Android Auto if I move the phone around to bunch. Or put the cable in a bind near the end that plugs into the phone.
AshtonGamer said:
One thing is that some USB-C headphones don't have a AMP/DAC built-in. This is a common problem with Razer Phone 2 users, as it doesn't have one inside. So, if your headphone adapter or USB-C headphones don't have one built-in it won't work. 2, seems like Android Auto doesn't like some USB cables. Try some troubleshooting from at the "My Android Auto app isn't working" page on the Android Auto help page.
Click to expand...
Click to collapse
Android auto and the adapter for the earphones used to work fine, it just happened out of nowhere before way before I sent the phone to get fixed like 2 weeks ago, the problems started last year but i think there was an update of some sort. It still won't connect, even when using the original adapter and my pc doesn't even pick up that the phone is even connected, it will just charge. I've already check the device manager to see if it was a bad driver but nothing. no matter what device i connect, it will just say "Charging connected device via USB". ive Already tried USB debugging, disable USB audio routing, cleaning it, and apps to manually control it.

Android Auto Wireless - Play music from USB?

Just wondering whether anyone using Android Auto Wireless has had any luck in getting music to play through the phone's USB port?
Specific issue here is wanting music to be played through the phone's USB port, in order to make use of a USB DAC attached to the phone.
So still using the AA interface on the headunit to control the media app (e.g. UAPP), but for media playback to go via USB.
Thanks :good:
Nik
Nova3einOz said:
Just wondering whether anyone using Android Auto Wireless has had any luck in getting music to play through the phone's USB port?
Specific issue here is wanting music to be played through the phone's USB port, in order to make use of a USB DAC attached to the phone.
So still using the AA interface on the headunit to control the media app (e.g. UAPP), but for media playback to go via USB.
Thanks :good:
Nik
Click to expand...
Click to collapse
phone > developer mode > usb audio routing (i believe debugging needs to be off)
or
headunit > usb
you may need a new cable due to not having compatible connections for audio output.
(my oneplus will only open aa with its original red power cable)
currently trying to get it to connect to wireless but seems to be having a metal breakdown

Question USB-C headphones (Oppo MH135-3) doesn't work

Hi guys!
I bought headphones USB-C Oppo MH135-3 and tried connect them to Realme 8 Pro but headphones doesn't work. Despite fact that theadphones are connected to the USB-C, the sound is still heard from the phone's loudspeaker.
I turned on the OTG function, but it also didn't help.
There was not even an icon on the phone that the headphones are connected, nor any system message about the connected device
Has anyone similar problem and knows how to solve it?
I think, theres no solution. That headphones works only with Oppo device but not all of them...
(I checked it in store)
Strange
Go to settings/additional settings and Look for OTG switch. Unfortunely you have to check that box every time you connect headphones. At least it works for my setup - OTG adapter + senheisser earbuds..
matiirk said:
Go to settings/additional settings and Look for OTG switch. Unfortunely you have to check that box every time you connect headphones. At least it works for my setup - OTG adapter + senheisser earbuds..
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Doesn't work

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