iPhone and Samsung combined make up almost 80% of smart phone market share in the US. Being as Statistia is a premium thing I can't get accurate numbers, but lets say splitting 50/50 because if it was anything with any serious gap, they wouldn't group them the same. I'd assume they're high 40's and low 50's split between the two, so means iPhone is ~40%, now I ain't no math magician or anything but that leaves ~60% for non-iPhone devices.
In plenty of other threads I've seen people bring up that in the US most phones are iPhones, they are the most popular choice by far. I can't remember where they sourced the info from and not about to research it myself though, at least not at the moment.
No buddy. I've looked up and verified sources in the past, just not willing to do so conversing with you in this particular discussion, especially since your reasoning which was just making assumptions was not very convincing. Thankfully others have already provided better sources.