As reported by “Macworld UK” (, the analyst firm Asymco says it thinks that expects to sell more than 263 million of its sixth-generation iPhone.

Asymco started its analysis by working out the estimated iPhone sales history of each generation, then calculating the cumulative totals of those models, the article adds. The results showe that:

° The iPhone 3G sold nearly four times the amount of original iPhones sold by Apple;

° The iPhone 3GS sold 1.6 times more units than the iPhone 3G;

° The iPhone 4 has just about outsold the original iPhone, the 3G and the 3GS’s sales put together;

° The iPhone 4S has currently sold more than the iPhone 4 by a bit, but is only half way towards beating the cumulative total sales of its four predecessors.

Asymco predicts that Apple will sell enough iPhones 4S units by September to put the model two thirds of the way towards beating the cumulative sales of the original iPhone, the iPhone 3G, iPhone 3GS and iPhone 4.