Yesterday, I happened to get a useage alert that my data had exceeded 953 mb. That alert worked fine. When I investigated, I found that one of my lines had used over 150 mb of data during that one day.
I've tried to setup periodic alerts at different intervals, but my fear is a Runaway device, meaning a device is using a lot of cellular data instead of wifi data as teenagers sometimes do.
If it is possible, I'd like to see a kind of "Runaway device" setting in which the rate of useage during the past 24 hours can be measured and I can be alerted.
For example, I'd like to have an alert that tells me whenever a device is using more than 10mb of cellular data within the past hour. Or an alert that more than 100mb of cellular data was used within the past 24 hours.
The useage alerts are fine for measuring the usage within a billing cycle, but not good for measuring high rates of usage during the past hour, or past day.
Please give this feature some thought and see what you can come up with.
I realize that this maybe impossible since you are an mvno and that you may be limited to the data provided by the cellular company.