Just ten days ahead of the much-hyped iPhone launch, Apple has released a smartphone matrix comparing the physical dimensions, talk time and battery life of some of the most popular smartphones that are available in the market today.

As per the matrix, Apple iPhone is the thinnest smartphone (half the thickness of N95 or Treo 750) with the largest screensize and Wi-Fi capabilities. [pdf]

While there's no option to swap the drained battery of an iPhone with a full recharged one, the promised eight hours of talktime and 250 hours of standby time should bring enough cheers to those who are planning to queue up outside the Apple stores at 0600 hours June 29, 2007.

In related news, a new report has suggest that 19 million Americans have strong interest in buying the iPhone, 67% of who are subscribers on other carrier networks.

Update: Nokia N95 is a Wi-Fi enabled phone and Apple has now updated the phone comparison chart.