I am trying to set up cellular network connection via ModemManager (https://www.balena.io/docs/reference/OS/network/2.x/#cellular-modem-setup) but am running into problem after problem. I have been banging at this for almost a week now with absolutely no progress.
So first, I have tested the modem, sim, and hardware on my linux machine and it works - I am connected to the internet.
After adding a ‘cellular’ file to the system-connections directory, I am seeing the modem. It even has a signal strength of 31, the highest possible. See attached file:
However when I disconnect from Ethernet and reboot the device, it does not connect and it is unavailable via the dashboard.
I am using the NimbeLink Gemalto modem and a Verizon SIM.
Any help would be greatly appreciated. I know this is an issue that many people are facing with BalenaOS.