I think the Apple and Samsung PR and advertising teams have simply tapped into a primitive part of the brains of consumers. In the natural world, upper echelon organisms see flashy, bold, "latest and greatest" traits as ideal and useful for passing on proven genetic characteristics. The prettiest male peacock gets the ladies. If two otherwise identical male peacocks were trying to get the attention of a female, the one with the most colorful plumage would win. Having the newest iPhone or Samsung is nothing more than colorful peacock feahters....social competition.