Current predictions of iPhone 4 sales are likely low in light of the iPhone 4 announcement, analysts comment. The device is as a rule considered impressive, mainly for features like video calling and the 960x460 Retina display, but also for less dramatic ones such as iOS 4 and a three-axis gyroscope. Shaw Wu of Kaufman Bros. observes that partly because of this, his company's present unit estimates may prove too low.
