Hello

Reporting on my SIM card swap. The car comes with att chip, 3gb or 3 months , whatever comes first. If you connect your phone to use PCM connect app (POI transfer, Napster, radio.net), the phone will keep using data for all else (e-mail, VOIP, music, etc). So, data goes to quickly. When added the native google maps and traffic, your 3 gb will be gone in a month. I tried using my home wifi to download maps but helped very little. Vanilla iPhone don't have an app like android that creates routines (IFTTT), for instance, if Bluetooth connects to PCM, then turn on hotspot and vice versa. You can manually turn on hotspot on your phone and the PCM will work as if it had a SIM card active. The battery on the phone will drain quickly.

Don't start me with CarPlay , it has a looooong way to go.

So, taking advantage of a promotion this weekend, I got 2 free data lines for my car and the wife's. Plugged in, it asked to choose one out of 4 options, I choose the one with LTE on it.
Immediately the hotspot worked. so did PCM connect. Google earth maps then downloaded fine.
Next came online search and traffic. Although the options were available, they did not work . I quickly swapped the att card back and then back to T-Mobile . After that it all worked well. I have the suspicion that there is something in the service contract that asks for att SIM card. Tomorrow I'll test again and drive around. Allegedly there are issues with different channels within the GSM band that differ between providers which renders T-Mobile coverage spotty with the PCM.

Worst case scenario I'll get an OBD hotspot, no cost per month as well and use it to connect the PCM to the internets.
Cheers!