Working WWAN on the X1 Carbon Gen 6

When I initially received my new X1 Carbon I was very excited at the new hardware. More pixels, more lumens, more cores. After I got over my initial euphoria, I noticed that some things didn’t work, and confirmed such by a very helpful Archwiki page. Some of the things that didn’t work include ACPI suspend-to-RAM sleep (since corrected in a BIOS update), the the fingerprint sensor (still outstanding), and the WWAN LTE Cat9 card that Lenovo seems so proud about.