In the US, the iPhone reigns supreme by a wide margin in the smartphone market. "According to recent data compiled by comScore, the iPhone’s share of the U.S. smartphone market now checks in at 43.6%. Following not too closely behind is Samsung with a 27.6% share of the market."[24] In March 2014, sales of the iPhone brand had reached 500 million devices.[25] In the last quarter of 2014, there were 74.5 million iPhones sold, a record, compared to 51.0 million in the last quarter of 2013.[26] Tim Cook revealed at the Apple Watch conference on March 9, 2015, that Apple had sold a total of 700 million iPhones to date.