Smartphones are leading among the sales of mobile devices in the United States

Smartphones continue to gain popularity. According to an American Nielsen study conducted in May 2011, 38% of mobile device users are smartphone owners…

 55% of respondents who bought a phone in the last three months said that they were buying a phone. Last year, there were 34% of such users.

Android continues to be the most popular mobile operating system, 38% of mobile phone users use Android.

However, despite the fact that the popularity of Android is growing, it is the Apple iPhone that has recently been growing in terms of sales.