topic Re: Re: Bluetooth car audio not automatically connecting after UI 8 update in Galaxy S24

Bluetooth car audio not automatically connecting after UI 8 update

Twodoor — Sun, 12 Oct 2025 20:53:16 GMT

This is in response to user: Guitarman2048 in another Samsung forum found at this website:
https://eu.community.samsung.com/t5/galaxy-s24-series/bluetooth-connection-issues-after-one-ui-8-0-update/td-p/13314275/page/4

I too am having problems connecting to the BlueTooth Audio from the S24 to my Mazada 3. The phone bluetooth connects, but the audio does not automatically connect as it used to in UI 7. Every time I start the car I have to start the audio playing on the cellphone (if the audio is not playing the bluetooth will never connect for audio. This used to work in UI 7 whether the audio was playing or not), then on the S24, go to bluetooth, go to the device (Mazda), select details and wait to see if it will connect to the audio. If it takes too long and the Mazada stops scanning, I have to turn off the car and try again. It seems like all my other bluetooth devices are working, but none connecting automatically. Something in UI 8 broke this function.

I have tried deleting the devices, re-pairing, resetting the networks, clearing cache, starting in safe mode, and I can't remember every thing else I've tried, but no go.

SAMSUNG, PLEASE FIX THIS!!! Better yet, give us a way to roll back the UI to a previous version that worked.

Once this is fixed, and everything is working, you can bet I'll be turning off automatic updates. Just like I have my computers setup to absolutely NO auto updates.

One last thing. I refuse to factory reset my phone over something like this, so please do not recommend that option. Fix the problem and send out a patch or a new UI.

After almost two days of troubleshooting this is what I found for my situation.
October 08, 2025

Hi,

I found that by going to Bluetooth, viewing the Bluetooth devices, and going to detail view for the car connection, the phone connection is turned on, but the audio is turned off. When I turn it on, it immediately turns off again. I turn it back on, and it immediately turns off. I have to do that 3 or 4 times before it stays on. However, by the time I win the on/off battle, the Bluetooth scan that the car is doing times out and I have to turn off the key and restart the car to get the Bluetooth scan to work again. The only way I can get it to work, somewhat consistently, is to have the audio playing on the phone, then start the engine, set the car radio control to Auxiliary, and while the car is scanning for a Bluetooth connection I have to quickly go the Bluetooth settings, details for the device and then turn the audio on, it turns itself on, I turn it back on, it turns itself off, I turn it back on and usually the third time I turn it back on, the audio connects. I have to do this every time I start the car. It no longer connects automatically. I have a 2010 Mazda 3, so that's long before Android was built into the cars. Bluetooth is an auxiliary function of the car's audio system. It's just simple Bluetooth that use to work great, and now it doesn't. Shame on you Samsung!!!

UI 8 broke this functionality and I or we have not heard a peep from you about a fix. Everything worked fine when using UI 7.

Re: Bluetooth car audio not automatically connecting after UI 8 update

Mujibar — Sun, 12 Oct 2025 21:29:14 GMT

As this is a user-to-user support forum, developers are not likely to see your post. To submit feedback directly to Samsung, follow the steps listed here:

https://us.community.samsung.com/t5/Tips-Tricks/How-to-Send-Feedback/ba-p/3001692?src=ShareByUserCM

Re: Bluetooth car audio not automatically connecting after UI 8 update

LumberJackUSA — Sat, 22 Nov 2025 19:43:07 GMT

I have a temporary solution that may not work for everyone (depending on the equipment you are trying to connect to). I have been using my s24 Ultra the entire day now doing errands linking over and over again after tweeting the phone and looks like its working. Here's a short video to prove it. https://youtube.com/shorts/nY5THPvlvKM?si=Phg2hdAMfdem8IKo

I got you guys/gals. I have been racking my brain here too. Cuz I love my current car sound system and don't need to change it just because of this glitch after updating to UI 8. By the way, Like the video so I know how severe and widespread this issue is.

I take no responsibility for the following instructions. Though the end result for me, I was able to get my head unit in my car to connect automatically to my phone and allowed me once again to stream my music apps and talk on the phone through my cars sound system like I did before the UI 8 update.

I am using a Samsung S24 Ultra, what you may have may be different but the instructions should be pretty similar if using a Android Operating system. Also, this may not work for everyone.

Goto SETTINGS

Scroll all the way to the bottom, and Tap on ‘About Phone’

Scroll down and Tap ‘Software Information’

Scroll down to ‘Build number’ and Tap it 7 or more times till it ask for YOUR PASSORD

Once you have enter your password, it will say ‘Developers Option is Unlocked’

Now at the top of your phone, Tap the arrow on the left of Software Information to go back to About Phone, then Tap the left arrow next to About Phone

You should now be back at Settings, scroll all the way to the bottom and you will see ‘Developers options’

[okay, so again, I take no responsibility. Once you are in Develops option, if you decide to tap on other stuff that I have not given any instruction for and you change those parameters and your phone takes a dump. IT’S NOT MY FAULT.]

Tap ‘Developers options’

Carefully scroll down to the 57th line, it should say ‘Bluetooth AVRCP Version’ yours should say below that AVRCP 1.5(Default)

Tap on ‘Bluetooth AVRCP Version’

Now change it from 1.5 to 1.3 then back out of all of this and RESTART your phone.

If everything is done right. Your head unit should be able to link with your phone automatically on startup of your vehicle.

[you can search online about Bluetooth AVRCP Version, and you can read up about the different versions]

Re: Bluetooth car audio not automatically connecting after UI 8 update

Twodoor — Mon, 13 Oct 2025 17:15:01 GMT

Thanks for the feedback. Interesting solution; however, it did not resolve the issue on my S24. I tried AVRCP 1.3, 1.4, 1.5, and 1.6 and they all do the same thing. To play audio through my 2010 Mazda 3 audio system I have to open details for the bluetooth connection to the car. Phone and Audio switches are ON. I have to turn off the Audio switch and then turn it back on. Then it connects. Something definitely broke this going from UI 7 to UI 8.

Re: Re: Bluetooth car audio not automatically connecting after UI 8 update

LumberJackUSA — Mon, 13 Oct 2025 17:39:44 GMT

Yeah. I didn't think this was a definite fix for all. As I said somewhere before that we all use our phones differently. I can only work with what is in front of me. But I do agree that the UI 8 is holding something out thats causing this issue for those of us that only have Bluetooth connection in our vehicles. Because none of my non-vehicle accessories have any issues linking to my phone.

Re: Bluetooth car audio not automatically connecting after UI 8 update

Twodoor — Sun, 19 Oct 2025 21:27:36 GMT

Apparently Samsung does not monitor these community boards. To send a message to Samsung, if you do not have the Samsung Members App installed on your phone, go to the play store, download and install the Samsung Member App. From the app, there is a support tab at the bottom of the screen. Tap support and follow the prompts. You may have to create a Samsung account. When you send your message to Samsung the app should also automatically send a copy of the phones log files. This was the only why I got any feedback from them. Of course, they threw it back on me, so I did everything they asked me do and when it didn't work I sent them another message. I have not heard back from that message yet.

Re: Bluetooth car audio not automatically connecting after UI 8 update

Members_Jo2FVt3 — Sat, 08 Nov 2025 02:51:23 GMT

I would love to hear if they ever helped you fix this issue!? I am experiencing the same thing after being forced to update my phone.

Re: Bluetooth car audio not automatically connecting after UI 8 update

alek7 — Sat, 08 Nov 2025 05:08:40 GMT

I'm having the exact same issue. Tried Samsung support and the rep told me to upgrade to newer car as the solution. Told them phone and BT worked fine before UI 8 update. No solution and kept saying my car is at fault.

Re: Bluetooth car audio not automatically connecting after UI 8 update

Metoo5 — Thu, 20 Nov 2025 01:42:01 GMT

Same issue after update 20/11/2025

Re: Bluetooth car audio not automatically connecting after UI 8 update

jhutch01 — Fri, 21 Nov 2025 20:48:31 GMT

Not your car, I have a Mazda 6 and it is having the same issue. So annoying. Only started to happen after UI 8 was installed.

Re: Bluetooth car audio not automatically connecting after UI 8 update

DaveOn1 — Sat, 22 Nov 2025 19:41:01 GMT

2010 Mazda 3 here, same issue. I just read another comment on this thread, Samsung saying "upgrade your car" as a response. This is ridiculous, and I wonder if it is legal?

Re: Bluetooth car audio not automatically connecting after UI 8 update

DaveOn1 — Sun, 23 Nov 2025 05:31:37 GMT

Ok, I made today my "fix Samsung UI trash day", I went on nice and calm.

I started by following the repeated suggestions from here, Reddit, blog posts, YT, etc. Not much in addition to the suggestions on this thread, but I have it all a try a second time, one by one. None of people's suggestions worked for me the other day, but I've found something that now works - with a little practice and patience.

For my 2010 Mazda M3, this works, in exactly this config/order:

Phone prep:

- follow the dev mode above to switch back to v1.3, also follow the "delete wifi/ Bluetooth network" advice

- restart phone

- turn off phone wifi

- Bluetooth pair the car and phone, ignore that it doesn't work properly

Car prep:

- when you leave your car, turn off the stereo

When you get in your car:

- turn car on

- straight away, open phone Bluetooth "details" settings for the already paired phone, toggle "Audio" to on. Ignore if this doesn't work right away

- turn car stereo on, it might not be in Bluetooth mode, switch it to BT mode. Ignore if this doesn't seem to connect and rests on "searching" for a while

- on your phone, still on the BT details settings for the paired car connection, keep turning "Audio" to on, it may turn off again, keep enabling it, this may happen several times

- switch to your phone media app, mine is spotify usually, and play media

- wait. Be patient. Think of it like making your morning coffee routine

At this point, it should connect properly, and stay connected. YMMV on the number of times you need to toggle "Audio" setting on, but doing things in this order seems to give both the car and phone time and sequence to sort themselves out.

May the force be with you.

Samsung, fix this elitist bug.

Re: Bluetooth car audio not automatically connecting after UI 8 update

DaveOn1 — Sun, 23 Nov 2025 05:38:57 GMT

Ok, I made today my "fix Samsung UI trash day", I went in nice and calm.

I started by following the repeated suggestions from here, Reddit, blog posts, YT, etc. Not much in addition to the suggestions on this thread, but I gave it all a try a second time, one by one. None of people's suggestions worked for me the other day, but I've found something that now works - with a little practice and patience.

For my 2010 Mazda M3, this works, in exactly this config/order:

Phone prep:

- follow the dev mode advice to switch back to v1.3, also follow the "delete wifi/ Bluetooth network" advice

- restart phone

- turn off phone wifi

- Bluetooth pair the car and phone, ignore that it doesn't work properly

Car prep:

- when you leave your car, turn off the stereo

When you get in your car:

- turn car on

- straight away, open phone Bluetooth "details" settings for the already paired phone, toggle "Audio" to on. Ignore if this doesn't work right away

- turn car stereo on, it might not be in Bluetooth mode, switch it to BT mode. Ignore if this doesn't seem to connect and rests on "searching" for a while

- on your phone, still on the BT details settings for the paired car connection, keep turning "Audio" to on, it may turn off again, keep enabling it, this may happen several times

- switch to your phone media app, mine is spotify usually, and play media

- wait. Be patient. Think of it like making your morning coffee routine

May the force be with you.

Samsung, fix this elitist bug. I'm not buying a smart vehicle to support your lack of attention to your existing customers. Reminder: the 'U' in 'One UI' stands for 'User', you know, us, your customers. Not a phone, not a smart car, not an engineering sprint, not showing that you're innovative with new features. User. People. Your customers.

Re: Bluetooth car audio not automatically connecting after UI 8 update

tzitzitlini — Thu, 27 Nov 2025 09:45:51 GMT

Same here, Mitsubishi Triton and Samsung s23ultra, the update **bleep** it

Re: Bluetooth car audio not automatically connecting after UI 8 update

wardie — Tue, 02 Dec 2025 16:59:22 GMT

Same problem with my A53

Re: Bluetooth car audio not automatically connecting after UI 8 update

mbmcnicol — Tue, 02 Dec 2025 21:48:14 GMT

Similar issue with me.

Phone: S24 Ultra

Car stereo: stock Rockford Fosgate in a 2011 Mitsubishi RVR GT.

On UI7 I could just get in my car and go. Phone and stereo would connect, and if the last thing I was listening to was music, then it'd just play.

On UI8, my phone "connects" (phone says it's connected, sometimes "for calls" and sometimes "for calls and audio," once in a blue moon "for audio" only). Car says "B NO CONNECT." If I go in to settings on my phone and turn audio off and on, it will then connect (about 90% of the time).

I reached out yo Samsung, they gave me some pretty poor instructions on clearing the cache for bluetooth and resetting my network settings to default. I did those, as well as deleted my phone from the car stereo and deleted my stereo from my phone, then re-paired fresh. Nothing helped.

And, surprise surprise, the reply I got from Samsung didn't include any way to report back on the status of my issue.

I suggest everyone with this issue to report it to Samsung, and make sure to include an exhaustive list of troubleshooting steps you've taken. The squeaky wheel gets the grease, and clearly there is something wrong with the update.

Re: Re: Bluetooth car audio not automatically connecting after UI 8 update

Rudykmz — Tue, 09 Dec 2025 18:49:44 GMT

How do you delete wifi/bluetooth network advice?

Re: Bluetooth car audio not automatically connecting after UI 8 update

Scotty656 — Fri, 12 Dec 2025 14:02:35 GMT

So my dads brand new Chev has no issues with it. But the other older cars in my family all have the same issue. Good one Samsung. Such a waste of time.

Re: Re: Bluetooth car audio not automatically connecting after UI 8 update

AndreaM — Sat, 13 Dec 2025 01:36:52 GMT

I got a brand new car in September and everything was working fine until last Saturday 12/6 > I was in a call while driving and it just cut out and the audio has not worked since on my phone. It did this ui8 update on 11/20. I've uninstalled and reinstalled and forgot reset the connection for the Bluetooth and the Wi-Fi and Android auto and I've wiped all the caches over and over and over again and turned my phone off and on my car off and on and it's honestly exasperating because nothing fixes it and there's no way to do a phone call through the car now. It's illegal in Chicago to touch your phone while you're driving so it's actually really dangerous to even try to answer a phone call but sometimes I am in traffic for over an hour and I have to speak to my work or my partner. Samsung needs to fix this!

Re: Re: Bluetooth car audio not automatically connecting after UI 8 update

mstrdmanic — Tue, 16 Dec 2025 00:43:32 GMT

I got a new car and they told me the same thing. I said my car is brand new!