MM 1.12.6 or MM 1.14.0 + LIBMBIM 1.24.0
Jul  7 11:42:59 [6570]: <info>  [modem0] QMI-based capability and mode switching support enabled
Jul  7 11:43:04 [6570]: <warn>  [modem0] couldn't load carrier config: Operation timed out
Jul  7 11:43:05 [6570]: <warn>  [modem0/sim0] couldn't load list of emergency numbers: Failed to parse CRSM query result '+CRSM: 148,8,""'
Jul  7 11:43:15 [6570]: <warn>  [modem0] couldn't load SUPL server: Failed to receive indication with the current server settings
Jul  7 11:43:25 [6570]: <warn>  [modem0] couldn't load supported assistance data types: Failed to receive indication with the predicted orbits data source
Jul  7 11:43:25 [6570]: <info>  [modem0] state changed (unknown -> disabled)

MM 1.12.6 + LIBMBIM 1.22.0

Jul  7 11:38:45 [6529]: <info>  QMI-based capability and mode switching support enabled
Jul  7 11:38:46 [6529]: <warn>  couldn't load list of Emergency Numbers: 'Failed to parse CRSM query result '+CRSM: 148,8,""''
Jul  7 11:38:46 [6529]: <info>  Modem: state changed (unknown -> disabled)

MM 1.12.6 + LIBMBIM 1.24.0 (delay between registered and connect)

Jul  7 12:00:21 [6548]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (unknown -> registering)
Jul  7 12:00:21 [6548]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (registering -> home)
Jul  7 12:00:21 [6548]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabled -> registered)
Jul  7 12:00:47 [6548]: <info>  Simple connect state (6/8): Bearer
Jul  7 12:00:47 [6548]: <info>  Simple connect state (7/8): Connect
Jul  7 12:00:47 [6548]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (registered -> connecting)
Jul  7 12:00:51 [6548]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> connected)