After a quick search, it seems this kind of problem is troubleshooted a lot by checking with mmcli the modem state info and info, which the error message hints at. A faulty or wrongly set up SIM is one possibility too but less likely IMHO.
After a quick search, it seems this kind of problem is troubleshooted a lot by checking with mmcli the modem state info and info, which the error message hints at. A faulty or wrongly set up SIM is one possibility too but less likely IMHO.