Google recently announced that its Googlebot – Mobile now crawls the mobile web with a smartphone user-agent, in addition to its existing feature-phone user-agent.
“With the number of smartphone users rapidly rising, we’re seeing more and more websites providing content specifically designed to be browsed on smartphones,”
“The content crawled by smartphone Googlebot-Mobile will be used primarily to improve the user experience on mobile search. For example, the new crawler may discover content specifically optimized to be browsed on smartphones as well as smartphone-specific redirects.”