IPhone 5 sells out at many stores nationwide

It was possible to walk into a store Saturday and buy an iPhone 5. But it took some hunting.
Some stores reported having Apple's newest phone available for walk-up customers. But a random check of about a dozen stores indicated that most were sold out.
A Verizon store in New York City said the phone was available. A Sprint store in a suburb of St. Paul, Minn., said all but the most expensive...