mmcli - Ubuntu Command Line Modem Manager, how CooL is that!

• Installation: sudo apt-get install modem-manager, this will also install mmcli tool.
• First find your modem id, the last digit modem/< int > is your modem number.

  user@comp:~$ mmcli -L
  Found 1 modems:
    /org/freedesktop/ModemManager1/Modem/0 [huawei] E1731
  

• Type mmcli --help-all and explore different options.
• Check network signal and type with:

  user@compu:~$ mmcli -m 0 --simple-status
  /org/freedesktop/ModemManager1/Modem/0
  -------------------------
  Status |          state: 'connected'
         | signal quality: '77' (recent)
         |          bands: 'unknown'
         |    access tech: 'hspa'
  -------------------------
  3GPP   |   registration: 'roaming'
         |  operator code: '40552'
         |  operator name: 'TATA DOCOMO'
         |   subscription: 'unknown'
  

• Enter mmcli -m 0 to get the full information about your modem and network.
• You can even send SMS through it. Refer: mmcli -m 0 --help-sms
• Though I was not able to place a call or receive a call through it.
• USSD numbers can also be dialed with command line, infact you can create a script to check you balance, in 2-3 lines :)

  user@compu:~$ mmcli -m 0 --3gpp-ussd-
  --3gpp-ussd-cancel     --3gpp-ussd-initiate=  --3gpp-ussd-respond=   --3gpp-ussd-status     
  user@compu:~$ mmcli -m 0 --3gpp-ussd-initiate=*111*1#
  USSD session initiated; new reply from network: '
  Loc-STD-Roam:239 Min for the day. Validity 24/03/2018
  Daily DATA Bal:929.94MB validity 24/03/2018. More *111*2#.RC32=1GB 28 Din, RC349=Unlmited L+S+Roam+SMS +
  # More'
  user@compu:~$ mmcli -m 0 --3gpp-ussd-respond=#
  response successfully sent in USSD session; new reply from network: '1.4GB/Day 56Din, TnC'
  user@compu:~$ mmcli -m 0 --3gpp-ussd-status
  /org/freedesktop/ModemManager1/Modem/0
  ----------------------------
  USSD |               status: 'idle'
       |      network request: 'none'
       | network notification: 'Data Session Charge:Rs 0. Bal Rs.1.26. Vol Used :0.11 MB. Data left: 937 MB. Val :24/03/2018.'