I understand how zooming in lowers the appearance of lens distortion since it increases towards the edges of the aspect. However, assuming you understand digital zoom, would it not make more sense to just crop the photos? I know this is essentially the same thing, but at least you would have a smaller file size and a photo that would not be pixelated at 100%. Zooming with the iPhone decreases the quality of the image as all this does is take a selected portion of the sensor's resolution and stretches it to the native resolution.
I understand the use of different lenses in photography including the benefits of a wide angle. However I believe considering the typical scenes captured with an iPhone and the photographic skill level of the general iPhone user, Apples choice of angle width is a tad overkill.
There have been times when I was thankful my iPhone was able to pull in more of the scene, for example when I took pictures of a room I was renting out. However taking a picture of my entire family at the dinner table during thanksgiving left the heads of people sitting near the edges of the photo warped and almost alien like.
The solution was to move back further and retake so all the people were closer to the center of the camera's view which meant I had to crop the photo. This strategy worked for less distortion sake but resulted in less detail as I was further away and cropping out precious resolution. With a less wide angle lens, I still would have had to move back further to include everyone in the shot, but at least then they would be safe near the edges of the photo therefore I could utilize the entire resolution of the sensor resulting in a higher definition photo with less distortion.
My take on the whole thing is that Apple should have waited until they are using higher resolution sensors to select a lens of this width. This would help preserve object detail loss due to the distance effect of the wide angle lens.