most of the people know, google changed some rules for the sites from 21st of April.
The sites that are not mobile friendly, will be not presented in search results from mobile devices.
This will no affect desktop or tablets search.

So, i found a tool that tells you, if google's crawler see your site as mobile friendly or not.
This is the tool:
https://www.google.com/webmasters/to...bile-friendly/

Enojy!