Rather common, like one's polo shirt
According to Rob Walker [http://muckrack.com/notrobwalker] writing in Yahoo! [http://news.yahoo.com/the-iphone-as-polo-shirt-142256534.html]:
"...it’s made it easier for me to recognize that the iPhone is, in fact, a totally bourgeois device: The iPhone has become, in its six short years, the technological equivalent of a Polo shirt.
"Toting a non-Apple device around the world, for the first time in ages, has made me see the Apple-toters with new eyes. If you’ll allow me to be totally and arbitrarily judgmental for a moment: It struck me just how common the iPhone has become. And I mean that in the sense of “not distinguished; not of superior excellence; ordinary,” per definition 4 in my Webster’s New Universal Unabridged Dictionary: Deluxe Second Edition. (I’ll stop short of citing definition 7: “not refined; low; coarse.”)
"Before everyone gets upset, I would actually draw a distinction between Apple in general and the iPhone in particular. The latter has become a brand unto itself, one that has long since crossed over from “cool” (meaning something embraced by a minority that thinks of itself as having elite taste) to “acceptable,” meaning it’s a sort of cultural default, like a Polo shirt or Nike sneakers — or, for that matter, Windows (in its heyday at least).
"It’s the brand for people who don’t want to think all that hard about what brand they are buying, and just want whatever everybody else will accept without question. It’s bourgeois."