Purpose The purpose of this paper is to investigate the role of in-store mobile usage on purchase decision making in order to understand whether and to what extent the use of the device changes the shopper behavior in terms of planned and unplanned purchases even across different retail store formats. Design/methodology/approach Data were obtained using a structured questionnaire from 406 respondents interviewed in hypermarket and discount stores, after the checkout. Data were measured through t-tests and the analysis of variance. Findings The mobile intensifies a process of preparation making it popular and the same across the different store formats, confirming how the growing convergence, making store formats less distinctive in the eyes of the consumer, has somewhat flattened and standardized the pre-shopping out-of-store preparation. Practical implications The pervasiveness and the versatility of the mobile, and its ability to influence the decision-making processes, leads to important managerial questions and implications regarding the effectiveness of in-store marketing initiatives and the need to review the mix of out-of-store and in-store investments, with the knowledge that the consumer will continue to become even more prepared and well informed in the future. Originality/value Mobile devices could be used out-of-store, as a tool for shopping preparation, and in-store as a tool for self-regulation. Therefore, it becomes crucial to understand how the mobile influences the decision-making process as well as the buying behavior of shoppers.
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