modem no carrier message

[Rainer]

Thanks for your effort in trying to resolve this issue!!! I'm a lapsed linux desktop user and I only recently bought my first cell phone so my knowledge regarding this issue is quite limited. I also have a hard time determining exactly what program (s) I need to use to simply see what network my phone is connected to, minicom?, mmcli?, nmcli? .... I believe someone advised me to actually stop the service first before entering commands to troubleshoot. This is the one case/linux forum where everyone actually has the exact same hardware so I can't understand why it is so difficult.