More than 1 million people bought the iPhone 3GS in the US only. Not to mention the rest of the world. But it seems you can better buy the black version than the white version. One buyer had some problems with his white iPhone 3GS. The man used his iPhone 3GS to test applications that require the use of GPS. During that time the iPhone was overheated. Back home he saw that the white cover of the device was covered with two brownish stripes. The white cover had changed color, because of the overheating. 
The man quickly contacted Apple’s customer service to explain the situation. Apple told the man to return the iPhone to do an analysis by engineers. The man wants his iPhone back as soon as possible ofcourse and stated that he wants a new model if the malfunction was not caused by him. Have more people had this problem?
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\\ tags: iphone 3gs, overheated
Yep, There hasn’t been a trusted source acknoledgment yet, so to this point these are rumors, however there a lot of them and all over. could be a market gossip, or could be a major diffecency in the most popular gadget.
But for now this should be treated as indvidual cases with unique circumstances.