To be fair, one of the things highlighted in this review is that the new iPhone has this functionality built in. Everyone (with this phone) has a wide angle view now.
The standard iPhone lens (26mm) has always been pretty much normal for phone camera lenses. When Apple introduced the second lens (51mm), they called it "telephoto," even though that focal length is pretty much dead-on the traditional definition for a "standard" lens. No traditional photographer would call a 51mm lens a telephoto lens.
So, for people who grew up with phones as their primary cameras, the new 13mm lens really is the first thing that they'd call a "wide angle" lens.
/end_nitpick ;)
The main camera on an iPhone has a 70-degree field of view, which most people consider wide.
The main camera is a wide by traditional standards, but not by phone camera standards, where the main (primary, "normal") camera has always been a wide angle, so nobody whose primary camera is a phone would think of it as wide.