That the data was being erroneously calculated/charged. I had to do some research, but Verizon (my carrier) and a bunch of other carriers actually appear to bil

That the data was being erroneously calculated/charged. I had to do some research, but Verizon (my carrier) and a bunch of other carriers actually appear to bill for "app usage data," which is still pretty unclear to me. It just magically shows up on your bill, even though it's not real used data. If you want to read of the numerous reports of the same issue, Google "adblock plus data usage android" and click on any of the forum discussions about it.