Apple launched the iPhone 4S in October 2011 and the success of the smartphone in the US has given the iOS operating system a larger chunk out of the market share for smartphones. In a new study by Nielsen, it claims that of those people surveyed in December 2011 who bought a new smartphone in the past three months, 44.5 percent said they bought an iPhone 4, compared to 23.1 percent in October 2011.
Among all smartphone users, those that have an Android-based device represent 46.3 percent of all smartphone owners in the US and that number goes up to 51.7 percent for those people who bought smartphones in the last three months. The people who have iOS-based smartphones represent 30 percent of all smartphone owners in the US and that number goes up to 37 percent for for those people who bought smartphones in the last three months.
The news isn't as good for any of the other smartphone operating systems. RIM's Blackberry OS is used by just 14.9 percent of smartphone users in the US, going down to just six percent for those who bought a smartphone in the last three months. The combined market share for Windows Mobile and Windows Phone 7 users was just 5.9 percent for the US and is even lower for the three month time period, with just 1.4 percent of Windows Phone 7 users and 2.4 percent for Windows Mobile users.