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With the recent release of the iPhone 3GS, countless people have traded in their flip phones, PDA’s, and even older iPhones for the newer, faster iPhone 3GS.

Silicon Alley Insider (SAI) recently conducted a survey that polled those who decided to upgrade to the new iPhone, the results are illustrated in the pie chart below.

Not labeled: Nokia/LG (9%) Blackberry (10%)

[9to5mac]