The iPhone is certainly one of the most talked about mobile phones among gadget hounds. Many were not happy when the original iPhone launched as an AT&T exclusive. When the iPhone 3G launched and AT&T began subsidizing some of the cost of the iPhone, people began to take a bit more notice of the handset.
According to market research firm NPD Group one in three iPhone 3G buyers have come to AT&T from other service providers. I am sure this is exactly what AT&T was hoping for when it agreed to subsidize the cost of the iPhone.