Fierce Network Broadband Nation Expo Broadband Nation Fierce Technology Events Advertise About Us Broadband Cloud Wireless Resources Fierce Events Research Podcasts Surveys Webinars Whitepapers Broadband Nation Learning Center Events Subscribe Broadband Cloud Wireless Resources Fierce Events Research Podcasts Surveys Webinars Whitepapers Broadband Nation Learning Center Events Subscribe Fierce Network Broadband Nation Expo Broadband Nation Fierce Technology Events Advertise About Us Wireless What were the top U.S. smartphone operating systems in May? By Jason Ankeny Jul 21, 2009 10:50am Almost 30 million Americans own a smartphone. Here are the top operating systems by market share. Slideshow