Gartner: 1.5 billion smartphones were sold in 2017

Over 1.3 billion Android devices were sold last year, followed by 215 million iOS devices.

In the battle between Android and iOS, the former emerged victorious as the preferred operating system in 2017.

According to market researcher Gartner, over 1.5 billion smartphones were sold last year, with 1.3 billion of them being Android devices. It was followed by 215 million iOS devices and 1.5 million smartphones using other operating systems such as Windows Phone and Blackberry.