How to get found fast on Google
"Mobile-friendly" now means found faster
Last month, Google starting officially boosting sites that are designed for mobile devices. Each site is also labeled in search results with the tag, "mobile-friendly."
“Google rarely says in public that something specific will rank you higher in its search results,” said Mark Traphagen, senior director of online marketing at Stone Temple Consulting, a digital-marketing agency. 'This will change a lot of behavior.'" (source)
Google released a tool to see if your site is considered "mobile-friendly." Google tool