tl;dr: disconnect from your VPN (or allow LAN connections)

I recently got an iPhone 17 and was being driven mad because, at first, CarPlay worked flawlessly on my 2019 Honda Fit (EX). However, next time I plugged in CarPlay refused to open. The phone was charging, the icon on the infotainment showed CarPlay, but it would hang for ~10s and close with a "no devices found, check cable, etc.". Android Auto worked for years without hiccups.

Nothing changed after a factory reset, reboot, etc. of the infotainment as many recommended.

I saw an offhand comment with how a VPN can cause problems. I'm connected to one 24/7 and I'm sure it worked earlier when I didn't set it up yet. I disconnected from the VPN and CarPlay immediately worked. The VPN I use has a "Allow LAN connections" setting which made disconnecting from the VPN unnecessary.

Wanted to throw this out there for people troubleshooting in the future. Not sure if this is specific to Honda or Apple, but my money is on how Apple devices do networking.

So I have a car that's ~10 years old and I like to listen to music as I drive. I was relying on the CD player, but it only works intermittently these days, so I'm looking into alternatives.

I'm not big on connecting my phone via Bluetooth for security reasons, battery life concerns, and poor connection for streaming. I've got radio of course, but it's slim pickings where I live.

I starting looking into digital audio players. They sound ideal - compact, big offline library, physical controls - so I was hoping someone on Tildes can recommend one to me. Alternatively, if you've another solution, I'd love to hear it.