The below advice from Samsung won't resolve the issue.  I've been through Samsung, Verizon, UBringWeBreak, Samsung andone of them were able to help.  Jaguar did an update and that didn't work, either.   It's not the car, it's the phone.  It's defaulted to sleep the phone in order to save battery power and that disconnects Bluetooth.  It wasn't like that on previous phone versions, but for some reason Samsung thought this was the way to go.  If you go into settings, then search for optimize battery.  From there Optimize battery usage and select All.  Scroll down to the Phone and turn those off (I have 3).  After I did that my phone remained connected to my car's BT. ... View more

The phone is defaulted to sleep when not in use in order to save battery power.  Unfortunately that also disconnects Bluetooth.  It wasn't like that on previous phone versions, but for some reason Samsung thought this was the way to go.  If you go into settings, then search for optimize battery.  From there Optimize battery usage and select All.  Scroll down to the Phone and turn those off (I have 3).  After I did that my phone remained connected to my car's BT. ... View more

It's not the vehicle, it's the phone.  It's defaulted to sleep the phone in order to save battery power and that disconnects Bluetooth.  It wasn't like that on previous phone versions, but for some reason Samsung thought this was the way to go.  If you go into settings, then search for optimize battery.  From there Optimize battery usage and select All.  Scroll down to the Phone and turn those off (I have 3).  After I did that my phone remained connected to my car's BT. ... View more

It was the same with my Jaguar XF.  It's not the car, it's the phone.  It's defaulted to sleep the phone in order to save battery power and that disconnects Bluetooth.  It wasn't like that on previous phone versions, but for some reason Samsung thought this was the way to go.  If you go into settings, then search for optimize battery.  From there Optimize battery usage and select All.  Scroll down to the Phone and turn those off (I have 3).  After I did that my phone remained connected to my car's BT. ... View more

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.  ... View more

userBy3teIqKlU Re: Galaxy S10 Plus Bluetooth Disconnecting Also try 1. Settings 2. Search for Optimize battery usage 3. Select Optimize battery usage 4. Select All to view all apps on phone 5. Scroll down to Phone and toggle to OFF position. This worked for me with my Mazda CX5 and Galaxy 10S+ This seems to have worked on my Jaguar XF 25t as well. 2 successful 10-minute trips with no disconnects. I've been through Samsung, Best Buy (Verizon referred us there), Verizon, UGiveWeBreak, Jaguar, and Verizon again. I spent hours with the folks who should be able to fix this yet no one had answers, and no one grasped the concept that audio connected and held, connecting to calls caused it to drop.  Everyone, even Jaguar, said it was the car's fault. After Jaguar updated the vehicle, though, it was Samsung's fault and it was suggested I should have gotten an iPhone.  Owning a hoity toity car does not shield one from sarcasm and useless feedback, fyi.  Back to Verizon to get an iPhone (I've had it!) and they won't do the exchange, despite the product not working and none of them being able to remedy it. Along comes @userBy3teIqKlU with a quick post and life is already better. There were 3 phone apps for me to turn off so now I can play with which, if any, of those I can put back on to optimization. ... View more

That May have worked.  I remained connected on two 10-minute trips today.    One thing to note, once I switched Bluetooth to phone calls (after removing the phone apps from optimization) my phone disconnected from the car immediately.  There was a confirmation for the phone accessing messages, to which I tapped, "ok."  When I went in to the toggles in the Bluetooth on the phone Phone Calls and Contact Access were toggled on, Audio and Message access were toggled off.  I toggled Audio and Message access back on, reconnected to the car, and remained connected.   I should have thought of this solution to begin with!  I didn't realize there were several apps related to the phone so it didn't even dawn on me, but still I feel like this is something I should have noticed.  Thank you x 100!  Here's to hoping it's not a fluke.  😄 ... View more

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:   Samsung cusomer service couldn't solve it WeBreakWhatUBring couldn't be bothered to try to solve it, though they lied about doing everything Jaguar update didn't solve it Verizon was of no help Soft reset didn't resolve it Factory reset didn't resolve it It drops in a Toyota, Jaguar, and Volkswagen; though the connection in the Toyota is more stable than the Jaguar It's not only my phone - the husband's S10+ also disconnects My headphones, with the latest Bluetooth updates, drops when connected for phone calls, works fine when connected for only audio Optimization doesn't matter for this issue because it's Only the phone call connection causing an issue Media works fine It's only the phone call connection that causes a problem Yes, that's repeated - it's because people aren't grasping that it's Only the phone call connection that doesn't work Media connection is stable 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! ... View more

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. ... View more

Adam,   I have the same issue.  We did some troubleshooting and discovered it's Only the phone bluetooth.  Audio stays connected.  Jaguar and Ford will allow you to connect only audio and when we did that we stayed connected.  As soon as we connected the phone the connection dropped Every time.  We went into the Verizon store yesterday and the girl went through all the steps listed on this forum and nothing resolved our issue.  As the previous poster mentioned, Android Auto does not support Jaguar so there's no reason for us to use that.  My husband's 2017 Toyota Tundra also drops the connection and he also does not use Android Auto.  The Verizon girl tried to give us that solution and I went ahead and did it, just to satisfy all the troubleshooting attempts, but nothing was resolved.   The full model number of the phone:  SM-G975U   Baseband version of the phone:  G975USQS1ASD9   Year, make and model of the vehicle: 2018 Jaguar XF 25t and 2017 Toyota Tundra   Service Provider: Verizon Business   It's a Major issue for us as we use our phones for business and it's beyond unprofessional to have calls dropping when speaking with investors who invest hundreds of thousands of dollars into each project.  My husband operates in a mobile office (his truck) so he experiences this far more than I do.  He's also the one who speaks to more people, or rather, hangs up on more people these days.  Our S8+ phones never dropped connection so this is something new with the S10 Plus.   The girl at Verizon told us there was a bluetooth stabilization update pending and Samsung was waiting for all the service providers to accept it; however, my husband noticed that update was pushed out May 20, 2019, which would be the baseband version we have currently.  We both concur that update did Not stabilize the phone connection for bluetooth.  Yesterday in the first 10 minutes of our drive my phone disconnected 7 times.  We tried his phone to rule out the potential of mine being the culprit and his also dropped connection numerous times.   One suggestion was to turn off battery optimization for bluetooth (Horrible solution, with BT being a battery hog, but we're desperate and have car chargers), but that did not resolve the issue. ... View more