As a student at a middle to upper class high school, I can say that it's definitely not about the actual features of iOS vs Android -- it's just a status symbol. People with iPhones are considered slightly "cooler", or at the very least it's more hip to have an iPhone than an Android. Apple's walled garden contributes to its dominance as well, if all your friends are using FaceTime and iMessage, there's not much that might influence someone to pick an Android phone than economic reasons. Speaking of which, the iPhone vs Android debate among teens really boils down to a thinly veiled version of classism (in my opinion). I heard a classmate respond to a question of what kind of phone she had with, "an iPhone, but it's a 6, so it's pretty much a Droid." (I'm not sure where the 2008 terminology came from, but still.)