What carrier? Maybe something has changed.
From want I’ve seen and read, you need the carrier specific apps and settings baked into the os.
I had to stop running custom roms a few years ago since I need wifi calling. I hate the bloat but where I live now doesn’t have cell service.
W!
I just ran into a problem with the cheaper reolink cameras. I didn’t realize that some don’t support rtsp or ONVIF. I was able to solve this with a github project neolink: https://github.com/QuantumEntangledAndy/neolink In less than 10min I was able to install neolink and get my $30 reolink camera working with my NVR.
I’m using windows 10 because I need it for school. I plan to ditch windows on my main pc once I’m done in the spring.
From what their website says it now works with android auto.