Owners of the iPhone 5s, Apple's latest flagship smartphone, are using significantly more data than iPhone 5 owners consumed last year -- twenty percent more, according to a new research report from JDSU (via TechCrunch), in what the writer of the study called an "unprecedented increase" in uplink and downlink data demands. The report examined data usage in both developed and developing markets, across more than a million mobile device users. iPhone 5s and fourth-generation iPad owners used the most data, with the Android-based HTC Sensation and the Sony Xperia SP coming up closely behind. Users of the latest iPhone 5s consume more downlink data than any other smartphone users in both markets under study, consuming almost seven times and twenty times as much as the bench
