Google sold 3.9 million Pixel phones in 2017, which is less than the weekly sales of iPhone devices in Q4 2017, where Apple sold 77.3 million units, according to IDC. The US phone market share of Google, which debuted its first branded phone 'Pixel' in 2016, rose to 2.8% from 1.8%, as per Spain-based firm Kantar Worldpanel.