Hey guys, quick update: I've been testing things with an AT&T IoT SIM card and everything is working fabulously! HTTP commands work, GPS is insanely quick to get a fix on location and all the normal commands that worked with the 2G and 3G modules also work, like battery level, network registration, etc.

I'll be ordering v2 of this board soon and hopefully start building and stocking them on my website! Let me know if you're interested in ordering one of these so I can get a head count.