Women Using Smartphones in the US in May 2008 - Number of

From StatWiki

"In the last year the number of American women using smartphones more than doubled to 10.4 million, growing at a faster pace than among men, according to Nielsen Mobile, which tracks wireless trends."

[edit] Source

The New York Times article "Smartphones Now Ringing for Women", published June 10, 2008. The article references a study by Nielsen Mobile.