Nielsen published a study conducted in USA in December. It shows the rather amazing result obtained by the iPhone 4S during this period, and how sales of android smartphones decreased by 25% within 3 months
So, in December, 57% of Smartphone sold in USA were iPhone models, even though competitors try to claim that the iPhone 4S is now outdated.
During Q4 2011, both Apple and Android marketshares increase, mostly due to the reduction of Windows and RIM smarphones.
