root@jh:~# mmcli -L

Found 1 modems:
	/org/freedesktop/ModemManager1/Modem/0 [Sierra Wireless, Incorporated] MC7304

root@jh:~# mmcli -m 0

/org/freedesktop/ModemManager1/Modem/0 (device id '10391e776eb3f387716a1dbd3c848e7ac6e19446')
  -------------------------
  Hardware |   manufacturer: 'Sierra Wireless, Incorporated'
           |          model: 'MC7304'
           |       revision: 'SWI9X15C_05.05.16.02 r21040 carmd-fwbuild1 2014/03/17 23:49:48'
           |      supported: 'gsm-umts
           |                  lte
           |                  gsm-umts, lte'
           |        current: 'gsm-umts, lte'
           |   equipment id: '356853050427295'
  -------------------------
  System   |         device: '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4'
           |        drivers: 'option1, qmi_wwan'
           |         plugin: 'Generic'
           |   primary port: 'cdc-wdm0'
           |          ports: 'ce0p1 (net), ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0 (qmi), cdc-wdm1 (qmi), ce0p0 (net)'
  -------------------------
  Numbers  |           own : 'unknown'
  -------------------------
  Status   |           lock: 'sim-pin2'
           | unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10)'
           |          state: 'registered'
           |    power state: 'on'
           |    access tech: 'umts'
           | signal quality: '42' (recent)
  -------------------------
  Modes    |      supported: 'allowed: 2g, 3g, 4g; preferred: none'
           |        current: 'allowed: 2g, 3g, 4g; preferred: none'
  -------------------------
  Bands    |      supported: 'cdma-bc15-aws, dcs, egsm, pcs, g850, u2100, u1900, u800, u850, u900, eutran-i, eutran-iii, eutran-vii, eutran-viii, eutran-xx'
           |        current: 'cdma-bc15-aws, dcs, egsm, pcs, g850, u2100, u1900, u850, u900, eutran-i, eutran-iii, eutran-vii, eutran-viii, eutran-xx'
  -------------------------
  IP       |      supported: 'ipv4, ipv6, ipv4v6'
  -------------------------
  3GPP     |           imei: '356853050427295'
           |  enabled locks: 'none'
           |    operator id: '20601'
           |  operator name: 'unknown'
           |   subscription: 'unknown'
           |   registration: 'home'
  -------------------------
  SIM      |           path: '/org/freedesktop/ModemManager1/SIM/0'

  -------------------------
  Bearers  |          paths: 'none'

root@jh:~# cd /sys/devices/pci0000:00/0000:00:14.0/usb1/1-4
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 0 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 1 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 0 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 1 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 0 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 1 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# systemctl restart ModemManager
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 0 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4# echo 1 > authorized 
root@jh:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4#