In a press release from Sevenval, websites that do not provide mobile friendly sites will recieve a lower ranking in Google search results.
Google made the first steps starting in the Fall of 2014 with their initiative “Mobile Friendly.” Google described which criteria should be fulfilled for mobile sites to be considered satisfactory. The search giant is now taking their initiative to the next level. Starting on April 21st, sites with poor mobile usability will decline in the search ranking results.
Google said they will be updateing their algorithm on April 21st. So far the search giant has been working with many organizations to help them optimize their sites. The news is expected, considering that an increasing percentage of search traffic comes from mobile devices.