In a statement, Apple CEO Tim Cook said,
“Demand for iPhone 5 has been incredible and we are working hard to get an iPhone 5 into the hands of every customer who wants one as quickly as possible. While we have sold out of our initial supply, stores continue to receive iPhone 5 shipments regularly and customers can continue to order online and receive an estimated delivery date. We appreciate everyone’s patience and are working hard to build enough iPhone 5s for everyone.”
At the same time, Apple added that 100 million iOS devices have updated to iOS 6, the company's latest version of its mobile platform.
While Apple said that the company and its manufacturing partners are working "hard to build enough iPhone 5s for everyone," a Foxconn facility in Taiyuan, located in central China, has been closed. A riot broke out late Sunday / early Monday, which is rumored to be due to a security guard hitting a worker.
Actual details are unclear.
It took Samsung 100 days to sell 20 million of its Galaxy S III Android smartphones globally, and it's obvious that Apple will easily surpass that. Of course, while Samsung is the global leader in cell phone sales, it has reached that mark with numerous varied handset.
Apple only updates its iPhone once a year, and the iPhone is the highest-selling single handset in the world.