Tested on machine with FM350 installed, with oem 6.0.0-1006 kernel, modem manager 1.20.0-1~ubuntu22.04.1, libmbim-glib4 1.28.0-1~ubuntu20.04 and libqmi-glib5 1.32.0-1~ubuntu0.22.04.1. System can connect to 5g network.

  -----------------------------------
  General   |                   path: /org/freedesktop/ModemManager1/Modem/0
            |              device id: b429ecd3cf5b14431f765b3a415cda29db1d504b
  -----------------------------------
  Hardware  |           manufacturer: generic
            |                  model: MBIM [14C3:4D75]
            |      firmware revision: 81600.0000.00.29.21.24_GC
            |                         D47
            |           h/w revision: V1.0.6
            |              supported: gsm-umts, lte, 5gnr
            |                current: gsm-umts, lte, 5gnr
            |           equipment id: 358198520003138
  -----------------------------------
  System    |                 device: /sys/devices/pci0000:00/0000:00:1c.0/0000:71:00.0
            |                drivers: mtk_t7xx
            |                 plugin: generic
            |           primary port: wwan0mbim0
            |                  ports: wwan0 (net), wwan0at0 (at), wwan0mbim0 (mbim)
  -----------------------------------
  Status    |                   lock: sim-pin2
            |         unlock retries: sim-pin2 (3)
            |                  state: connected
            |            power state: on
            |            access tech: lte, 5gnr
            |         signal quality: 64% (cached)
  -----------------------------------
  Modes     |              supported: allowed: 3g; preferred: none
            |                         allowed: 4g; preferred: none
            |                         allowed: 3g, 4g; preferred: none
            |                         allowed: 5g; preferred: none
            |                         allowed: 3g, 5g; preferred: none
            |                         allowed: 4g, 5g; preferred: none
            |                         allowed: 3g, 4g, 5g; preferred: none
            |                current: allowed: 3g, 4g, 5g; preferred: none
  -----------------------------------
  IP        |              supported: ipv4, ipv6, ipv4v6
  -----------------------------------
  3GPP      |                   imei: 358198520003138
            |          enabled locks: fixed-dialing
            |            operator id: 46692
            |          operator name: Chunghwa Telecom
            |           registration: home
            |   packet service state: attached
  -----------------------------------
  3GPP EPS  |   ue mode of operation: csps-2
            |    initial bearer path: /org/freedesktop/ModemManager1/Bearer/0
            |     initial bearer apn: internet
            | initial bearer ip type: ipv4v6
  -----------------------------------
  3GPP 5GNR |              mico mode: disabled
  -----------------------------------
  SIM       |       primary sim path: /org/freedesktop/ModemManager1/SIM/0
            |         sim slot paths: slot 1: /org/freedesktop/ModemManager1/SIM/0 (active)
            |                         slot 2: /org/freedesktop/ModemManager1/SIM/1
  -----------------------------------
  Bearer    |                  paths: /org/freedesktop/ModemManager1/Bearer/1