The iPhone 5 that will be showing up at Apple's September 12th event is an "N42" model first identified in May, sources tell 9to5Mac. The unit is said to have features like a 4-inch, 1136x640 display and upgraded processors and RAM. The N42 was reportedly picked over an N41 design, which had NFC technology; recent reports have claimed that the shipping iPhone 5 will indeed skip NFC.
