One statistic I’m curious about and have never seen any good number for is an over-time graph of total tablets in active use.
Looking only at iPads, if that number has been increasing at a rate of some significant fraction of the total sales in the same period, that would indicate that the overall market is increasing, but iPads aren’t breaking and people are happy enough with what they have to not replace it very quickly.
If, on the other hand, it’s not going up by much, or is actually decreasing, that would indicate that there are less people overall who want a tablet at all, and it’s a shrinking market.
The former isn’t great for business, but it does indicate a relatively healthy market--just one that saw initial spikes because it was in the process of being saturated. The latter would be a bad sign, and would mean either people are happy with their phones or end up going back to a laptop.
I have no idea which is the case, but I’d really like to. Based entirely on the statistically insignificant sample of “people I know”, it seems like the “saturating market with a long replacement cycle” is at least believable--I know a lot of people with several-generation-old iPads that they use heavily and aren’t in a hurry to replace.
If nothing else, I’m 100% certain that iPhones (and other phones) have a shorter replacement cycle than iPads. I can base this entirely on the significant number of people I see walking around with recent-model iPhones with broken screens. All else being equal, people drop and rough up their phones a lot more than their tablets.
This article shows tablet usage statistics for January 2014 and January 2015. The article is about how much Samsung's usage has grown - so I think it's fair to say it's unbiased: https://chitika.com/insights/2015/q1-tablet-update
This article shows iPad's high web usage early 2014: http://www.cheatsheet.com/technolog...-web-traffic-in-north-america.html/?a=viewall
It's actually really difficult to find data on it though.