TWC42
Well-known member
I've had at least two occasions where at around 9 pm on the last day of my billing period I got a text from AT&T (by dialing *3282#) showing I was just under my plan limit, phones were plugged into chargers not used, in WiFi from that point on, and a few days later I get a bill showing data overage. (Called, complained, got the charge credited back). The previous month's rollover will definitely help in those situations. Data reported is definitely days behind data used.