With 800 retail stores across the UK and Ireland, Carphone Warehouse is the UK’s largest independent mobile phone retailer. Working alongside Adobe Media Optimizer, Google and Carphone Warehouse designed an experiment using a geo-based methodology to develop insights around this phenomenon of consumers conducting research on potential product purchases on the mobile web then completing subsequent transactions elsewhere. Specifically, they sought to find an answer to the question “Does mobile search advertising with Google drive consumers to buy in-store?”