Just to update the status of this bug. ModemManagerQt and NetworkManagerQt's master branch already support ModemManager1 interface. There is a mm1port branch in the new Plasma NM applet that also supports ModemManager1, so this bug is near to be closed as fixed.
Just to update the status of this bug. ModemManagerQt and NetworkManagerQt's master branch already support ModemManager1 interface. There is a mm1port branch in the new Plasma NM applet that also supports ModemManager1, so this bug is near to be closed as fixed.