Monthly usage summary
The month-to-date usage is totalled up for the account and displayed as a summary for the current month as a summary. The count of SIMs shown here is the number of SIMs that have consumed data or SMS.
Data usage is rounded up to the highest whole unit (MB, GB, TB, etc.) along with actual count of SIMs that have used data in the current month.
Outgoing SMSs are totalled up and displayed along with actual count of SIMs that have used these SMSs in the current month.