2015 US Market Smartphone Statistics

As of July 2015:

191.4 million people in the U.S. owned smartphones (77.1% mobile market penetration)

Apple  44.2%, Android 51.4%

Total user activity on smartphones and tablets accounts for 62% of digital media time spent, and apps alone now representing the majority of digital media time at 54 percent.

 

Source:  comScore, Sept 2015