On April 21, Google rolled out a mobile-friendly update designed to boost the rankings of mobile-friendly pages on mobile search engine results pages (SERPs). This update affected search results for individual pages only (not entire websites), globally and in all languages on mobile devices.

According to Google, the main goal of this update was to adjust the algorithm to accommodate mobile usage patterns, as more people use smartphones and other mobile devices to access the Internet. Google aims to offer searchers the most relevant, timely mobile results and in keeping with that, this update rewards mobile-friendly websites and relevant app content in search results.
Google finally announced that mobile search volume has overtaken desktop search not only in the U.S., but in 10 countries including Canada, the United States and Japan. This shift to mobile has an incredibly impactful effect on local search results, as local search has increasingly become a smartphone-based activity.