A couple of things to note:http://blog.nielsen.com/nielsenwire/?p=30686
Nielsen U.S. smartphone market share: iPhone 4S catapults Apple iOS into virtual tie with Google Android
According to the latest research from Nielsen, the high-profile launch of Apple’s iPhone 4S on October 14, 2011 had an enormous impact on the proportion of smartphone owners who chose an Apple iPhone.
Among recent acquirers, meaning those who said they got a new device within the past three months, 44.5% of those surveyed in December said they chose an iPhone, compared to just 25.1% in October. Furthermore, 57% of new iPhone owners surveyed in December said they got an iPhone 4S.
Android continues to cling to the lead among all U.S. smartphone users, with 46.9% of all smartphone owners surveyed in Q42011 reporting they settled for an Android-based mobile phone vs. 44.5% who treated themselves to Apple iPhones.
As of Q42011, 46 percent of US mobile consumers had smartphones, and that figure is growing quickly. In fact, 60 percent of those who said they got a new device within the last three months chose a smartphone over a feature phone.
- Dumbphones are on the decline.
- WP7 isn't even included in this graph (because there was no reason to?)
- RIM on the decline, as expected. So those mysteriously positive satisfaction reports about BB (I recall there being only one, recently) can probably be ignored.
- Regardless of Android's share, keep in mind that a) most of it's in smartphones - they barely have any in tablets (which is a problem), and b) iOS is still the overall dominant mobile OS worldwide (in part because Apple rules the tablet space.)