Users are reporting that their white iPhones are becoming discolored in the back changing the white plastic to a pinkish hue.

The reason for this pinkish hue appearing only on white iPhones seems to be a faulty battery giving off an excess amount of heat. However, some speculate that it may be due to processor intensive tasks causing the CPU and/or GPS chipset to overheat. The later seems more probable as Apple had to down clock the iPhone 3GS’ CPU. However, Aaron Vronko of Rapid Repair (who have disassembled the iPhone 3GS) has his own theory on the problem.

“My guess is there’s going to be a whole lot of batteries affected because these are from very large production runs. If you have a problem in the design of a series of batteries, it’s probably going to be spread to tens of thousands, if not hundreds of thousands, and maybe more.”

If your white iPhone 3GS becomes discolored, let us know in the comments!

Via: iPhone World