I am also currently having the same issue after updating to IOS18 And iPhone 16pro max Whether wired or wireless sound quality is poof and very mono. At some point it corrects itself then you touch the phone screen then back to mono again. Making phone calls big issue. Nothing respond,nothing else resolve it. My Bluetooth works fine. Please fix this… so tired of this
CarPlay issues
Our engineering teams need to investigate this issue, as resolution may involve changes to Apple's software. I'd greatly appreciate it if you could open a bug report, include a sysdiagnose and post the FB number here once you do. Bug Reporting: How and Why? has tips on creating your bug report.