Consumer Intelligence Research reports that an estimated 101 million iPhones are in the country, 58 million are iPhone 6 and 6 Plus models, while the iPhone 6s and 6s Plus make up 4 million. Combined, nearly 2/3 of iPhone owners have an iPhone 6 or newer. In the September 2015 quarter, the install base grew 4%, down from the 6% growth seen in September 2014. According to CIRP Co-Founder Josh Lowitz, growth was once as high as 17%. "In previous quarters, we saw the installed base grow by as much as 17% in the December 2013 quarter after the launch of the iPhone 5S and 5C," said Lowitz. "As the US market matures, Apple has fewer first time smartphone buyers to add to their base, and faces the challenge of attracting loyal Android users." What attracts people to the iPhone 6 and iPhone 6s ? What makes those phones so special compared to other iPhone models ? Could be it that they are more Android like then previous phons ? In size that is.