Looking at the fourth quarter of 2017 alone, the iPhone 7 was the 2016 best-selling iPhone, followed by the iPhone 7 Plus, based on research from the IHS Markit Smartphone Shipment Database, which tracks quarterly shipment data for more than 350 smartphone models. Apple is in the second spot among smartphone makers, shipping 50.8 million phones, down 0.8% from a year ago.
iHS Market says that “Apple again has demonstrated that its new iPhones integrate enough innovations and new features to drive sales and remain successful in the market.” The company also is capable of selling older devices for an extended period; for instance, the year-old iPhone 6s and 6s Plus both were among the most-shipped models in 2016.