In the latest study of teens, 40 percent own an iPhone.
That is almost double the 23 percent of teens who owned an iPhone in Fall 2011 and an increase 6 percent since the spring, the survey.
It does not state if the iPhones were new of "hand-me-down" models from parents.
Gene Munster at Piper Jaffray also observed that the lines for iPhone are up 83% over last year.
Compare Samsung Galaxy S III to iPhone 5.