Apple iPhone 5S and 5C in High Demand, Could Sell up to Seven Million Units in Opening Weekend

Apple’s new iPhone 5S and iPhone 5C went on sale today and boy are they proving popular already.

“Demand for the new iPhones has been incredible, and we are currently sold out or have limited supply of certain iPhone 5S models in some stores,” an Apple representative told AllThingsD.

According to Carl Howe, an analyst at Yankee Group, who correctly predicted opening weekend sales last year, Apple could sell seven million or more units during this opening weekend—but only if it has sufficient supply.

Gene Munster, an analyst at Piper Jaffray, believes the worlds most valuable technology company will sell up to six million iPhones even if Apple doesn’t have enough of the product immediately available. His prediction is in line with Brian Marshall, an analyst with ISI Group.

According to experts, the flagship iPhone’s fingerprint sensor makes the gadget more difficult to manufacture, which could explain potentially short supplies.

One positive sign for Apple is that people are still winning to line up for product launches: in some cities, such as Munich, as many as 2,000 people lined up.