I've gone through every potential issue in this very long thread without success. I have an S10 and a Jaguar XE. The phone continuously disconnects, even when I am not using it.
I've tried the battery optimization but it doesn't work and can even happen right after a phone reboot with no apps running (even if I am not on the phone or playing music).
I've tried the third party connection apps with no success.
This did not happen with my Galaxy S8 in the same car. It only started happening on my S10 from day 1. This is super frustrating and even though I've been a Samsung phone user for many years, I'm considering switching due primarily to this issue.
I'm going in Friday to see if Jaguar has an update. The service rep told me they did get a memo about Android and Jaguar having an issue. He said it wasn't going to be an update they're made aware of, it will be something that's done when we go in for service. Since mine had the nav card missing I'm getting that installed and will see if they have an update. I'll post an update either way so other Jag owners will know whether to go in or wait.
Bluetooth should be backwards compatible, especially with a car that's only 2 years old. I don't pretend to know Everything, but every article I've read backs me up on this theory - if Android made it truly backwards compatible there shouldn't be a need for an update. Maybe someone more knowledgable can explain it.
Jaguar update was a bust. I spent 3 hours in the dealership having them test and update. Works Fine with iPhones and S8s but as soon as an S10+ is hooked up for phone calls, boom, dropped. I connected phone calls and audio, dropped Immediately and went straight to FM radio. I turn off phone calls and I have Bluetooth audio the entire way home. I connect at home for phone calls, Bluetooth dropped instantly and went to FM radio. I looked in the Media menu and only had FM / AM / USB options, no Bluetooth. Turn off phone calls and Bluetooth Audio shows up in the menu. Unbelievable.
I have tried everyting within reason:
My next step is to go to Verizon and trade in for an iPhone. iPhone may be worthy of being made fun of for many reasons, but at least I'll have a working Bluetooth connection!
So almost a year later I want to update that it appears that Samsung/Android has resolved this issue. As I stated in other posts, I had tried everything and the bluetooth would constantly disconnect with my Samsung S10+ and 2018 F-Pace. Iphones worked fine, Older versions of Android before 9 worked fine, but Android 10 was a disaster in this regard.
I just brought my car in for its first service and they did software updates, but the problem was most likely resolved in the last OTA update from Verizon on my phone. I had learned that if you disable phone on bluetooth menu and keep audio streaming on, the phone would be stable. It was when I would enable the phone, it would disconnect constantly. I reneabled the phone about a month ago, and it has been stable working normally. Finally! Thank you Samsung/Google for tormenting me for 10 months, but it seems good now.
The phone is simple set to save your battery power, and so disables the data connectivity for certain apps when the phone sleeps, (screen not on). Adjuat the setting and you will be good to go. The is only as smart as the user.
Or, Samsung could make that obvious as previous models did Not cause BT to disconnect in favor of saving the battery charge. There was no need to go through all that rigmarole to prevent disconnects on previous phone versions. FYI, you're saying that Samsung, Verizon, Samsung again, and UBringWeBreak are all dumber than the phone because not One of them found this to be intuitive and not one of them were able to assist me. In fact, every last one of them told me it was the car's fault.