Download the authoritative guide: Cloud Computing 2018: Using the Cloud to Transform Your Business
Bloomberg: A study by European firm Arieso has found that iPhone 4S owners use about twice as much data as iPhone 4 owners. That may be because the voice interface prompts users to access data services more often, or it may be because the iPhone 4S syncs with Apple's servers more often. By comparison, the average user of one of the latest BlackBerry smartphones downloads about 20 percent as much data as the average iPhone 4S user.
The same study found that the top 1 percent of mobile data users account for about half of all data volumes.