iPhone5 border Diaoqi frequently complaints Apple says is a normal phenomenon

Some users find that the side edge of the iPhone 5 will appear scratches and Diaoqi phenomenon in use. Apple has to respond to complaints, saying it was "normal".
Phil Schiller, Apple's senior vice president of marketing, said in an email: "any aluminum products may appear in the use scratch or Diaoqi, thus showing the natural color of the metal, which is a normal phenomenon."
A self-proclaimed "Alex" users have previously sent a letter to Phil Schiller, Phil Schiller said the iPhone 5 the side edge scratches and Diaoqi of the problem, and asked whether Apple plans to solve this problem. U.S. technology blog 9to5Mac Phil Schiller reply to a message, and confirm the authenticity.
Since the iPhone 5 on sale, many users found that the side edge of the iPhone 5 is prone to scratches and paint chips, particularly evident in the black version of the phone. Some tests, the iPhone 5 side edge of the aluminum surface relative to the iPhone 4S glass surface more easily Diaoqi. Phil Schiller's statement is accurate, but not good news for iPhone users.
Phil Schiller, nor does it explain why Apple does not solve this problem let iPhone 5 on sale. In fact, prior to shipping the iPhone 5 packing, some products have emerged scratches.
According to Phil Schiller, iPhone 5 users only to adapt to such scratches, or purchase a suitable enclosure to protect the side.