@jow please can we get Modem Manager updated to 1.18.8 and most importantly with this patch:
pulled in to 22.03? It is needed to properly support devices incorporating wwan, since otherwise ISP disconnects result in loss of internet connectivity pending user intervention.
Update November 3, 2022: actually we need to wait for further development on nefifd 'modemmanager' see here or 'qmi' see here protocols in 'master' to properly handle such disconnections.