Google search on mobiles will now start to rank mobile-friendly websites higher from April 21st.
Google believes you’d want to see more Google believes you’d want to see more mobile-friendly websites when you do searches on a phone or tablet. That’s why Google mobile search will start giving online destinations with mobile versions higher placements on the results page.
Google has long given ranking points to websites that are optimized for new computers and devices, and it also made finding mobile-friendly ones easier last year, so the change isn’t entirely surprising.
If you run a website and need to know if Google recognizes its phone/tablet version, though, you can run it through their mobile-friendly test tool. You can never be too sure, especially since Google believes this change “will have a significant impact in [its] search results.”
– Google Mobile-friendly Test Tool