One of the most widely used datasets by Wall Street analysts was published by comScore. The latest mobile usages and handsets data from the research company found 87.4 million people in America used smartphones to communicating and accessing wireless networks by the end of September 2011. The research firm believes smartphone usages have increased about 12% from the prior three month period ending June 2011.
Google Android was number one smartphone operating system with 44.8% market share by the end of three-month period ending September (July, August, and September). Compared to the prior three-months span (April, May, and June), Android had 40.2% share, and this was an increase of 4.6% share for the period.
Apple iOS was number two by capturing 27.4% share, compared to the previous three-months period which was at 26.6% share (an increase of 0.8% share). With the launch of Apple iOS version 5 during the second week of October, Apple iOS will continue to maintain its superior position in term of smartphone market share in America in months to come.
With production delays and its popular messenger system (BBM) outages, RIM BlackBerry’s share of smartphone market in America dropped to 18.9% share, compared to the previous three-month span which was at 23.5% share (a drop of 4.6% share).
Microsoft Windows Phone will likely take the number three spot in the next few months with its partnership with Nokia handsets maker and very aggressive marketing campaigns for the latest mobile OS dubbed as “mango” or Windows Phone version 7.5. However, Windows Phone OS had only 5.6% share by the end of September, compared to the prior three-month which was at 5.8% share (a drop of 0.2% share).

(Table: comScore)