Android phones makes up 51% of all smartphones in the United States, compared to the iPhone, which has a 30.7% share, according to comScore.

That trend has held up globally as well, with Android devices making up 56% of first-quarter smartphone sales. Just 23% were iPhones, Gartner reported on Wednesday.

Meanwhile, Nielsen found that the number of iPhone and Android users doubled in the United States over the past year. Globally, Apple and Google smartphones grew their market share by nearly 26 percentage points. They now control 79% of the market.