4G on Dell IoT Gateway

[Oriol Rius]

Hi, again about Dell IoT Gateway 5000 with Snappy 15.04 I have a problem 
trying to set up a 4G connection using nmcli and mmcli without success. 
Simple capabilities doesn't work and Dell support it's slow and 
insufficient.

My first problem starts trying to validate the PIN. But in the end what 
I need is a simple tutorial or manual that help me how to set up the 
internet connection. I found some information reading mailing lists and 
googling, but everything is imprecise and incomplete. About the modem I 
use:

# mmcli -m 0

/org/freedesktop/ModemManager1/Modem/0 (device id 
'b73aa014c0d2097ce1e62fd9aa2a82c6f8dc6307')
  -------------------------
  Hardware |   manufacturer: 'Telit'
           |          model: 'HE910-D'
           |       revision: '12.00.086'
           |      supported: 'gsm-umts'
           |        current: 'gsm-umts'
           |   equipment id: '356136070745999'
  -------------------------
  System   |         device: 
'/sys/devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4.1'
           |        drivers: 'cdc_acm, cdc_ether'
           |         plugin: 'Dell'
           |   primary port: 'ttyACM3'
           |          ports: 'ttyACM3 (at), wwan0 (net), ttyACM0 (at)'
  -------------------------
  Numbers  |           own : 'unknown'
  -------------------------
  Status   |           lock: 'unknown'
           | unlock retries: 'unknown'
           |          state: 'failed'
           |  failed reason: 'sim-missing'
           |    power state: 'on'
           |    access tech: 'unknown'
           | signal quality: '0' (cached)
  -------------------------
  Modes    |      supported: 'allowed: 2g, 3g; preferred: none'
           |        current: 'allowed: any; preferred: none'
  -------------------------
  Bands    |      supported: 'unknown'
           |        current: 'unknown'
  -------------------------
  IP       |      supported: 'none'
  -------------------------
  SIM      |           path: 'none'

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


Can you recommend any resource that help me on that?

Thank you very much.

Regards.
Oriol
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