Fierce Network Broadband Nation Expo Fierce Technology Events Sensors Converge Advertise About Us Broadband Cloud Wireless Resources Fierce Events Podcasts Surveys Webinar Whitepaper Events Subscribe Broadband Cloud Wireless Resources Fierce Events Podcasts Surveys Webinar Whitepaper Events Subscribe Fierce Network Broadband Nation Expo Fierce Technology Events Sensors Converge Advertise About Us Special report: Take the AI & Automation Survey 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