Google has been altering its search results to improve the mobile search experience for its users.
One of the latest changes is showing a “mobile friendly” tag next to a websites listing in the search results that are checked to display correctly on a mobile device.
To check if your website earns this status you can use the mobile-friendly website test tool.
Google has even started sending warnings to webmasters to inform them that their website is not mobile friendly!
If Google sees your website displaying or functioning incorrectly on a mobile they will email your webmaster account with a warning that your website may not rank as well in the mobile search results.
Needless to say these search results are very important to all businesses online. This underlines the need to have a mobile friendly website, its not an option these days if you value your SEO rankings.