Chateau + ROS7 device should (I would even say MUST) get LTE data traffic counter that survives reboot.
1.) This is a consumer device, users always have limited data plan (even those uncapped get throughput limitations etc.) !
2.) if device reboots (which happens often on Chateau, specially with a beta release such as ROS7), all data counters are lost
3.) you can not expect from customers to run DUDE or SNMP etc.
4.) you can not expect from customer to implement scripts with L7 variables to have that data after reboot.
5.) Ideally possibility to allow to set data threshold, some limited action in case of reaching this (log for example), and date of month when to reset data counter
(you could also provide write-to-disk value programable, from 5min to 1day...)
We all know data counted on device is not 100% exactly what the carrier will bill you. But its good enough for 99.9% cases.
Writing the interface data every x minutes to FLASH memory won't kill the FLASH but would be very helpful for many customers.
So please make it happen... (and push this up if you agree with this ask!)