Do you even know what that means?
Okay, go to your website on your mobile phone. Can you read, find, or tap on your links without having to pinch, zoom & scroll from side to side? If you do, then your website is not mobile-friendly.
Google has come out with statistics showing that:
More searches today are done with mobile phones vs. desktops!!! (Google-2013)
The reason no one is going to your site using their phones is because Google Mobile can’t find you. It is a different search engine than Google and it prefers Mobilized websites first no matter how good your SEO is.