USB tethering isn't working between my Punkt MP02 phone and any of my computers. I've tested on Windows, macOS, and Linux. WiFi tethering works. Troubleshooting is easiest with Linux so I'm going to use my Ubuntu 20.04 laptop.
The MP02 does not export a network device via USB when tethering is turned on.
The MP02 should export a network device and DHCP services via USB when tethering is turned on.