Apple may sell as many as four million units of its new iPhone 4S this weekend, reports “Bloomberg Businessweek” ( The latest version of the company’s smartphone goes on sale today.

The device — available in the U.S., Australia, Canada, France, Germany, Japan and the U.K. — is projected to outperform last year’s introduction of the iPhone 4, which topped 1.7 million units in its introductory weekend, the article adds. For the iPhone 4S, most estimates range from 2-3 million, with Yankee Group analyst Carl Howe predicting sales of as much as four million.