An armored truck delivered a lunchtime supply of the new iPhone 4S to the Sprint store at 42nd Street and Sixth Avenue Friday, October 14. While midday lines were shorter than those at eight in the morning, when Sprint outlets opened, demand remained high. Pre-orders started last week, once new Apple CEO Tim Cook introduced the phone in an October 4 keynote address, one day before the death of former CEO and co-founder Steve Jobs. Stores also sold the phone on a first-come, first-serve basis, and will continue to do so until the supply runs out.  This is the first time Sprint has carried the iPhone since it was introduced in 2007 for AT&T users.