Macy’s and Best Buy snagged the No. 1 and No. 3 spots for the best performing mobile brands in the U.S. The global study collected and analyzed more than 2,000 brands and more than 240,000 data points to determine each brand’s mobile performance against five dimensions: discoverability, mobile optimization, navigation and content, utility and usability, and driving desired actions. Read more at FierceRetail.