According to the latest research from Nielsen, the launch of the iPhone 4S had an “enormous impact” on the percentage of new smartphone purchasers who bought an iPhone. Among recent acquirers—those who said they got a new device within the past three months—44.5 percent of those surveyed in December said they chose an iPhone, compared to just 25.1 percent in October. Interestingly, the same metric for Android buyers dropped…
