Phone won't connect to car Bluetooth for calls

[Kay410]

So my phone will connect to my cars bluetooth for audio, but since Thursdsy the 'calls' tab keeps turning itself off in my Bluetooth settings. 

I've disconnected phone from the car and started again, I've reset network & Bluetooth settings, I've tried other phones on my car and they work so it's definitely the phone.

Any ideas please? It's driving me mad 😭

[Tourbillon De La Vie]

Check and exclude  app you are using from power/battery optimisations. Leave it on unrestricted 

[Kay410]

There's no app, it's just trying my phone for calls I'm trying to connect.

Everytime I tap the 'calls' tab it switches itself straight back off

[Tourbillon De La Vie]

Wipe cache partition

https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/

[jellybaby]

Hey there have you resolved this please as I've same problem.x

[Kay410]

No not yet unfortunately! When did it start doing the same thing for you?

I've cleared the cache as suggested above, reset network settings, Bluetooth settings, disconnected and unpaired then paired them again various times but still nothing...

[jellybaby]

I've switched off data saver and I'll let you know if that makes a difference. It's been quite a while that it's been like this I just haven't had the time to sort it out. Hopefully this weekend...
If I find an answer I'll come back to you. Take care

[Sam391]

Hi, was there ever a fix found for this. Mine is doing it

[Members_Nt0gLRa]

I had the same problem, affected car and smartwatch. The problem was waze app, I unistalled, restarted the phone(dont know if this is really necessary) and everything started working again. Afterwards I installed again the app, and had no problem.

[Members_OeYmaG2]

Having the same issue. No new apps, started happening after the latest one UI update. Anyone got more clues? Samsung support does nothing, as usual.