I noticed that there are usage alert features to disable device/voice/message/data individually when individual limits are met. I have 3 limits: when voice at 90 min, disable till next billing; when message at 90 msg, disable till next billing period; when data at 90mb, disable till next billing period. This way, my max monthly is capped at $15.
Yep! However, we will not interrupt an active voice or data session to impose a cap. If you start a 20-minute phone call during minute 85, we will enforce the cap AFTER your call completes, even though you're over the cap.
Fun fact: The Small buckets (100 minutes, messages, megabytes) all have a 5% grace on them. So, we don't actually kick you into the Medium buckets until unit 106.