According to the press release announcing the findings, the study revealed "4 in every 5 smartphone users – 85.9 million in total – accessed retail content on their device in July" alone. Leading the way were Amazon Sites which came in as the top retailer with an audience of 49.6 million visitors. And far as bricks and mortars go, Wal-Mart, Target and Best Buy were the top 3 in terms of smartphone visitors.