In response to the previous message: I have contacted Apple directly and was told one or another update would resolve the problem. As far as I understand, this hasn't been the case so far. I've been an Apple guy till the wheels come off for the last 25 years, but I'm beginning to get annoyed by the introduction of more and more bells & whistles (eg the measuring app that came with 12) at the expense of some of the iPhone's most basic longtime uses. Use #1 has been communication. Use #2, for a long long long long time, has been playing music back in my car, something that's now been impaired by Apple's "progress."
It's a month since the most recent postings on this thread. If anyone has found that any of the latest updates to iOS12 resolves the issue of distorted music playback that the original installation of 12 introduced, I hope he/she will post here.
Bought an Audi a month ago and noticed this, also my friends couldn't hear the problem, I was thinking I was literally crazy, but sometimes I could definetly hear the music cristal clear and sometimes crappy.
The music changed bitrate while played I was **bleep** sure. I thought it was an Audi problem and I was mad AF because throught my Bose Revolve and QC the music quality was fine.
Anyway turning Off Wi-Fi from settings solve the problem for me also, but I'd really like a fix since it's not normal and It's crazy that from a 1k phone quality through bluetooth (the thing that Apple is aiming at also, since they removed the hedphone jack as well) is **bleep** compared from a 100€ Samsung.
Really mad, also since now I know that is an iOS 12 problem and not an hardware problem. It makes me even more mad. I can't really enjoy my music like this. Like this is really a problem for me.
Good to know that there is a developer bug case open for this issue, and that I'm not crazy.
I've been having this issue since the first iOS12 beta on my iPhone X and submitted numerous bug reports to no avail. I've gone through 3 iPhone replacements trying to pinpoint the issue until finally on the last replacement, I decided to stay on iOS11. No issues! Everything works perfect.
The other day I decided to throw caution to the wind and update my phone. 1 minute later and I'm hearing the issue already. I thought maybe it was only my car, a 2014 BMW 3 series, so its good to know that it's not a super specific case. Any update on the dev bugs? Are they even pretending to look at it and try and fix this? For the record I use Apple Music as well, and it's a problem all around. Definitely not a data signal issue or anything. I'll try turning off the Wifi to see if that helps