Sprint BlackBerry and HTC Smartphones: Extremely Popular with the Growing Number of Smartphone Users If you own or plan to purchase a smartphone, you're certainly not alone: the research firm Yankee Group in early June 2009 reported that 41 percent of consumers in the U.S. said they planned to make their next cell phone purchase a smartphone. CNET.com reported in April 2009 that the number of smartphone users is expected to reach 100 million by 2013. Many of them will end up purchasing a Sprin...