also got the event log here:
Thu, Jan 15 14:01:50 System Device is online
Thu, Jan 15 13:58:52 System Time synchronization successful
Thu, Jan 15 13:55:31 WAN Cellular 1 connected to Vodafone (10.180.21.132)
Thu, Jan 15 13:54:40 WAN Cellular 1 is roaming, switching to SIM B for local data connection
Thu, Jan 15 13:54:10 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:53:44 System Time synchronization fail
Thu, Jan 15 13:52:31 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:50:52 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:49:12 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:48:44 System Time synchronization fail
Thu, Jan 15 13:47:33 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:45:48 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:44:08 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:43:43 System Time synchronization fail
Thu, Jan 15 13:42:29 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:40:52 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:39:08 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:38:43 System Time synchronization fail
Thu, Jan 15 13:37:28 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:35:47 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:34:08 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:32:27 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:30:47 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:29:08 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:27:27 WAN Cellular 1 cannot connect, switching to SIM A
Thu, Jan 15 13:25:48 WAN Cellular 1 cannot connect, switching to SIM B
Thu, Jan 15 13:24:08 WAN Cellular 1 health check failed, switching to SIM A
Thu, Jan 15 13:24:03 WAN Cellular 1 disconnected (WAN failed SmartCheck)