何がきっかけかわかりませんがモバイル接続できるようになりました!
IIJmioの タイプDデータ専用SIMです。開発者に感謝!
https://github.com/abrasive/xmm7360
$ mmcli -L
/org/freedesktop/ModemManager1/Modem/2 [Fibocom Wireless Inc.] L850-GL
$ mmcli -m 2
-----------------------------
General | dbus path: /org/freedesktop/ModemManager1/Modem/2
| device id: adde8d2a200ae40256de3f06bf7f000d71d71f2b
-----------------------------
Hardware | manufacturer: Fibocom Wireless Inc.
| model: L850-GL
| firmware revision: 18500.5001.08.02.24.09
| h/w revision: V1.0.4
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: XXXXXXXXXXXXXXX
-----------------------------
System | device: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6
| drivers: cdc_mbim
| plugin: Fibocom
| primary port: cdc-wdm0
| ports: cdc-wdm0 (mbim), wwan0 (net)
-----------------------------
Numbers | own: XXXXXXXXXXX
-----------------------------
Status | unlock retries: sim-pin2 (3)
| state: connected
| power state: on
| access tech: hsdpa
| signal quality: 41% (cached)
-----------------------------
Modes | supported: allowed: 3g, 4g; preferred: none
| current: allowed: 3g, 4g; preferred: none
-----------------------------
IP | supported: ipv4, ipv6, ipv4v6
-----------------------------
3GPP | imei: XXXXXXXXXXXXXXX
| enabled locks: fixed-dialing
| operator id: 44010
| operator name: NTT DOCOMO
| registration: home
| pco:
| 0: (complete) '272280000D04CAE80202000D04CAE80203802110030100108106CAE802028306CAE80203'
-----------------------------
SIM | dbus path: /org/freedesktop/ModemManager1/SIM/2
-----------------------------
Bearer | dbus path: /org/freedesktop/ModemManager1/Bearer/1
$