After looking at the Gemalto M.2 modules for modems it seems a lot of carrier bands and frequencies are not covered.
I’ve been searching for alternative M.2 modules and have come across a few that cover more bands and have available Linux drivers.
However, none of the ones I have found are compatible with voice usage.
Has anyone else had luck finding alternative modems?
If you have please list them below and link to where we can purchase them. If that is okay with the moderators?