I use my iPad excessively, or so I'm told. I can't even claim to be a social user. At the same time I divide my technology use between my iPads, laptop and iPhone. In the past month I have paid attention to what exactly I do with my different devices and I present what is an unscientific view of my device use.
As I look at the chart the first thing that becomes clear is that my iPhone is just my backup device. I really use it only when my other devices are not there, are out of charge, or if it is the only device with connectivity.
I use my computer for writing, analysis, and in class. Other uses on my laptop are mainly a result of the fact that I am already on the device. For example if I am already writing I will use my computer for email but I will almost never switch to my computer for handling email.
I use my iPad for media consumption, social media, and media production. In class I use both computer and iPad in equal amounts but LMS work happens more my laptop since many of the functions including file upload and grading are not available on the iPad.
What I think the data shows is that for heavy users like me there is no one device that can do it all. The iPad can become a lot more central (though it does represent more than 60% of my technology use) if it had a good file management system and better LMS interphase that allowed me to use the grading feature on my Blackboard.