In 2008, women smart phone users in the U.S. numbered 10.4 million. (New York Times)
In 2009, that number more than doubled to 26 million.*
In 2008, 12 percent of male cell phone users had smartphones, and 8 percent of female cell phone users had smartphones (18to34.org citing Nielsen Mobile)
In 2009, women mobile web use grew 43 % compared to the growth in men's use at 26%. (Nielsen)
In 2009, more than 80% of US women owned a wireless device and 17% used a smartphone. (Marketing Chartsciting SRG)
The percentage of women reporting they logged into their social networking sites at least once a day grew from 53% in 2008, to 72% in 2009. (Marketing Chartsciting SheSpeaks)
In 2009, 50% of female social media users reported using products because of information on social networking sites. (Marketing Charts citing SheSpeaks)
*The number of women smartphone users in the U.S. in 2009 seemed carefully guarded information to Handshake 2.0's researchers. We calculated. With 155.8 million women in the U.S. in 2009, and 17% of women using smartphones, we estimated 26 million women smart phone users in 2009. To use very technical terms, there's way more now.
These posts may be of further interest:
The Apps That Connect Us - A Report on Women, Smartphones and Mobile Apps
This Woman's Gotta Have Mobile Apps (case study)
Women and Apps - Mobile and Social
Best Mobile Apps for Women
Mobile Apps for Women in Business
as may be our category, Women and Mobile Apps.