It builds on the legacy of its predecessors with bigger screen, faster chip, LTE. As expected, the iPhone 5 already appears to be a big success for Apple. Buyers flooded Apple’s online store on Sept. 14 to get their pre-orders in, while delivery times for those who waited have already backed up to mid-October. According to Apple, two million iPhone 5s were sold in the first 24 hours they were available. (Full disclosure: I was among those online just after 3 a.m. ET.).