Would be nice to know, what exactly do they consider as small phones, etc... i can only guess that 4inch is the border line between small and medium, while 5inch or 5,5 between medium and phablets...

Regardless, i hope that with next generations of their products Apple will acknowledge the existence of people like me, who are not into big phones and replace their 5S model from their current line-up with some kind of iPhone 7 Mini or whatever they would want to call it. Simply shrinked version of the regular model to the form-factor of 5S, the same way 6 Plus is oversized version of regular 6.

I like small Android phones, and it's getting harder and harder to find them. 

For mine, so-called market trends are about what marketing companies WANT us to buy... whether we want or need it or not.  If they make the item so attractive, by saying everybody else has one, and you'd be a mug not to get your own, they appeal to the 'sheep' in the buying public and boost sales by preying on weaknesses rather than fact/actual sales figures.

It's like the salesman in JB Hi-fi when I was enquiring about the Mac Mini as a possible addition to my tech setup.  He tried to convince me that Macs now command 56% and have overtaken PC sales, that Macs are THE in thing with just about everyone these days buying a computer.  Now I don't know if he meant 56% worldwide or just at JB Hi-Fi, but either way it was complete bullshit, in an attempt to boots his commissions with a sale of the 'must have tech of the century'.

Incidentally, my purchase of the Mac Mini was not the result of marketing data, fanboi hype or Apple's assertion they make the best.  No, I'd always been interested in OS-X as an operating system, and because various members here and on other forums gave positive input/feedback, I decided to satisfy my curiosoty in the cheapest way I could... save downloading a pirated copy and installing it on my Intel rig, which is possible these days.  However, that would not have given me a true Mac/OS-X experience and would have defeated the purpose... having Windows and OS-X running side by side on the one desktop.

That survey is useless without breaking down what they consider small/medium/large/phablet.  My M8 is 5.0" which is about all the larger I personally want, but I'd hardly call it a phablet.  5.5" eh, pushing it.  6", yeah, I'd call a phablet.  But in my small sample (my IT office of about 90 people), I know of two people with a phone that's 6.0" (Lumia 1520's).  Their numbers indicate a market of 20%.  

That also ignores that just because it's an Android or iOS device doesn't mean it's a phone or phone replacement but there's no mention of those devices (Asus Transformer, iPad, etc) being filtered out.  Those devices aren't replacing phones so if those are included, that's a completely worthless result.