The smaller gap in the US indicates the cheaper device is more popular here than in other markets, including the much-desired developing regions, the firm said. It examined 20 million devices as part of the iPhone study.
While Apple still sells a truckload of iPhones, the fate of its continued growth is a little less certain. The Cupertino, Calif., company may have invented the modern generation of touchscreen smartphones, but it faces stiff competition from companies unafraid to offer dirt-cheap, but functional, phones. While the iPhone remains king in the US, it has since ceded its leadership position elsewhere around the world. Globally, Apple has been losing market share to Android devices, particularly from Samsung.
The company also has faced more competition in tablets. Apple on Tuesday will unveil its newest iPads as it attempts to stave off competition from Android devices.