Having recently read the article on AnandTech on the iPhone 5 anodization process: http://www.anandtech.com/show/6330/the-iphone-5-review/3 It bugs me why Apple does not choose to use better anodization. In particular, the anodization depth Apple uses is TOO THIN/SHALLOW, leading to poor paint retention and easily chipping of the paint. The chamfered edge is also a terrible choice. Since anodization is even less by nature, the paint can only be adhered onto the surface. Poor understanding of material science in the design.