Last year we heard informal statements from several Google employees that mobile search queries would probably overtake desktop queries some time this year. Google just confirmed this has now happened.

The company says that “more Google searches take place on mobile devices than on computers in 10 countries including the US and Japan.” The company declined to elaborate further on what the other countries were, how recently this change happened or what the relative volumes of PC and mobile search queries are now.

Google did tell us that mobile queries include mobile browser-based searches and those coming from Google’s mobile search apps. The company didn’t break down the relative shares of each.

Google groups tablets with desktops. So this is just smartphones and does not include tablets.

Comscore previously released a report and graphic, showing the relative volume of US-based search queries on PCs, tablets and smartphones. Overall the company said that in Q4 2014, US mobile queries (tablets + smartphones) were roughly 29 percent of total search volumes. This is across the entire industry.



What Google is now saying suggests that either the comScore data were incorrect or the growth of mobile search is happening much faster than anticipated or some combination of those explanations. I asked Google to comment on the comScore data above but the company declined to do so.

These data are being released in the context of a range of new AdWords and Google Display Network tools and announcements, which Ginny Marvin has discussed in more detail in a companion article. Generally speaking the announcements cover new ad formats, new automation tools across both search and display ads and new measurement and attribution capabilities, with an emphasis on store visits and offline measurement.

With this revelation that mobile search has now overtaken desktop search we get a bit more color and context for the recent mobile-friendly algorithm update. I’ve been arguing for well over a year that mobile is now the “primary screen” for marketers.

That now extends to search marketers as well.