tailf /var/log/syslog

Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> Activation (ttyUSB3) starting connection 'MobiNil Default 1'
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> (ttyUSB3): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> Activation (ttyUSB3) Stage 1 of 5 (Device Prepare) scheduled...
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> Activation (ttyUSB3) Stage 1 of 5 (Device Prepare) started...
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> Activation (ttyUSB3) Stage 1 of 5 (Device Prepare) complete.
Feb  8 13:32:14 Inspiron-N5010 modem-manager[885]: <info>  Modem /org/freedesktop/ModemManager/Modems/0: state changed (registered -> connecting)
Feb  8 13:32:14 Inspiron-N5010 modem-manager[885]: <info>  Modem /org/freedesktop/ModemManager/Modems/0: state changed (connecting -> registered)
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <warn> GSM connection failed: (32) No cause information available
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> (ttyUSB3): device state change: prepare -> failed (reason 'unknown') [40 120 1]
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <warn> Activation (ttyUSB3) failed.
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> (ttyUSB3): device state change: failed -> disconnected (reason 'none') [120 30 0]
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: <info> (ttyUSB3): deactivating device (reason 'none') [0]
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: nm_system_iface_flush_routes: assertion `ifindex > 0' failed
Feb  8 13:32:14 Inspiron-N5010 NetworkManager[911]: nm_system_iface_flush_addresses: assertion `ifindex > 0' failed