Users of flagship smartphones such as Apple’s iPhone 5s and Samsung’s Galaxy S4 are continuing to suck down more data than their tablet-wielding counterparts, according to a large-scale survey of mobile data consumption in 2013 conducted by JDSU (which last year bought mobile data analytics company Arieso, the company that previously ran the annual survey).

Last year’s mobile data consumption survey, which looked at 2012 data, also found flagship smartphone device users outpacing the data consumption rates of tablet users.

But the most data thirsty phone users of all have an iPhone 5s burning a hole in their pocket.

As with the 2012 study, the 2013 survey examined the data demands of more than one million subscribers using more than 150 different devices over a single, 24-hour weekday in a Tier-1 European market, which had a mixture of urban and suburban morphologies. But for the first time the survey also studied a developing market for comparative purposes — with a further one million+ subscribers studied in this market over the same 24-hour period.

To ensure statistical validity the study only looked at the data demands of popular devices — i.e. those represented by at least 1,000 subscribers (conversely, the most popular devices had subscriber rates of well over 10,000 apiece).

The results are pretty telling about the habits of flagship smartphone owners, if not entirely surprising. You guys are a data-demanding bunch. Especially if you happen to own the latest iPhone.