We see all kinds of data going back in the course of a day, this one was interesting. The dichotomy between big screen 4k and small screen interactions is another one of those data sets that are just plain hard to quantify.
We now spend more time using smartphones than surfing the web on PCs
http://www.engadget.com/2014/02/24/nielsen-phone-usage/?ncid=rss_truncated
Usable News.