Three, a UK mobile network provider specializing in unlimited data packages, has reported that its customers are talking full advantage of their plans. Specifically, the average monthly usage has more than doubled this summer (we use the term loosely) from 450MB to 1.1GB over the same period last year. Smartphone users are understandably the healthiest eaters, sucking down around 1.5GB per month. With the BBC continuing to expand its 3G offerings and an undoubted increase in tablet use, tethering and the like, we imagine these figures are far from their peak. With 4G