If you a digital marketing professional you should read and “listen” to this article written by Barry Schwartz
Note that many websites have sections that are difficult to make “mobile-friendly, so don’t worry about 100% mobile-friendly by April 21, 2015.
Top three things to consider:
- The algorithm will start rolling out on April 21st and will take a few days to a week to completely and globally.
- You are either mobile-friendly or not, there are no degrees of mobile-friendliness in this algorithm.
- The fastest way to see if your web pages are mobile-friendly is to see if you have the mobile-friendly label in the live mobile search results now. If not, check the mobile-friendly testing tool, which should match the live Google search results, whereas the mobile usability reports in Google Webmaster Tools can be delayed based on crawl time.
More details and Q & A session for mobile ranking change, go to “Google Clarifies The Mobile-Friendly Algorithm Will Roll Out Over a Week, Be a Yes/No Response & More”