Alrighty guys, time for me to input my thoughts on both of the discussions going on in this thread.
1) I was disappointed to see an immediate and noticeable bitter backlash against a poster who is clearly new to our forum and is clearly angry about a (rather expensive) purchase he made that didn't work out. Not everyone is as tech savvy and super sexy intelligent as you lot, and not everyone is going to sit down and write out a ten page essay about the pros and cons of every prospective technology purchase. I was pleased to see ours mods and more trusted members step in and help alleviate the situation with helpful, thoughtful responses, as that is what they are here to do. They were chosen by a team of other trusted members to help moderate the forums and prevent this exact situation from occurring. We want people to come back, to learn more, and to eventually become a productive and knowledgeable member of these forums. Belittling someone who may or may not know better or who could quite simply be angry and/or in a rush is only going to further harm the situation. This is not a place for you to judge another based on their thoughts or opinions, but to calmly and intelligently discuss the topic in question and input your own opinion in a helpful manner. Feel free to call me out on anything I said, but I'd appreciate it being in a rational manner.
2) And as far as the true topic of this post goes: I believe it's an issue with your car and not your phone, but it could potentially be a hardware issue with your phone (they happen), a software bug (I've heard of a few affecting Bluetooth performance on the S8 duo), or simple user error. Even I get frustrated with your phone before realizing all my issue were down to me being a gibbon.