This document summarizes key findings from a study on smartphone user behavior conducted by Google and IPSOS OTX MediaCT in 2011. The study found that smartphones are integral to daily life for most users, who use their phones throughout the day for activities like searching, browsing, and using apps. Location-based searches and local information are very common on smartphones. Mobile also influences shopping behavior, with many users researching products on their phones and making purchases across channels. The majority of smartphone users notice mobile ads and some take action like clicking or purchasing after seeing an ad. The summary highlights that marketers should develop cross-channel strategies that incorporate mobile search, local products/services, and ads to reach smartphone owners.