@QasimRashid isn't the question there “why an expensive iphone instead of a cheaper android phone”, rather than “why a smartphone”? which is still problematic, if one considers the existence of a significantly richer used market for iphones than for android phones.
(the whole thing depends on the local phone market, of course, here a new iPhone is afaik about a month's wages for a *non poor* person, decent android phones can be had for a bit more than a tenth of that)