He's far from the only one using a cameraphone and the idea that you go unobserved is interesting in that that has often been the reason people have used a Leica - small, unobtrusive, unthreatening. A camera phone is even better for that since you blend in all the more.
There is a great HBO documentary about his work in Libya
Well, for one thing, the pictures are square. That's not such a minor change.
He explains some of his reasons here:
http://lightbox.time.com/2012/08/16/an-iphone-in-congo-photos-by-michael-christopher-brown/#1
He's far from the only one using a cameraphone and the idea that you go unobserved is interesting in that that has often been the reason people have used a Leica - small, unobtrusive, unthreatening. A camera phone is even better for that since you blend in all the more.
There is a great HBO documentary about his work in Libya
Witness Part02 Libya WS XviD err0001 - YouTube
and he's not just using an i-phone.