In 2011 ,US Smartphone ownership as
compared with 2009 has more than doubled in two years Two years ago, only 18
percent of mobile subscribers had smartphones and these smartphone audiences
were more likely to be male.Today, nearly half of mobile subscribers in the U.S. own a
smartphone device and 51 percent of them are female.
The Mobile OS break up is shown in the above chart. From a mere 4% in 2009
Android has grown to 49%, a growth of 45% in two years, Android has powered
almost 50% smartphones sold in US in 2010 and 2011