The 1.7 million iPhone 4s sold over the weekend can be attributed in part to FaceTime, claims UBS' Maynard Um. The analyst explains that in a recent survey, 68 percent of iPhone 4 buyers said that FaceTime was the most attractive new feature of the hardware. It could drive extra sales in the future, Um argues, as actually making use of the technology requires both the caller and the receiver to have an iPhone 4.
