Little is known about how culture affects users' perceptions and beliefs after they have adopted an information technology (IT). This study constructed and verified a research model, based on interaction theory and the cultural lens model, that focuses on the relationship between users' cultural profiles and post-adoption beliefs in the context of the mobile Internet. The results of large-scale on-line surveys in Korea, Hong Kong, and Taiwan indicate that four cultural factors-uncertainty avoidance, individualism, contextuality, and time perception-have a significant influence on users' post-adoption perceptions of mobile Internet services.

The mobile Internet, which gives access to the World Wide Web through a mobile device, has been gaining in popularity. The mobile Internet differs from the traditional stationary Internet in that it can be used in a wider variety of contexts. However, no studies have identified the contexts in which mobile Internet services are used most frequently, or determined which contexts exert significant influence on a user's choice of mobile service. This article proposes a framework of use contexts that reflects the characteristics of the mobile Internet. To explore these contexts, a research method was devised and a longitudinal monitoring study was conducted.The results indicate that mobile Internet use is heavily clustered around a few key contexts, rather than dispersed widely over diverse contexts. Further, participants in the monitoring study were found to concentrate their use on a few mobile services, rather than on exploring diverse services. Perhaps most interestingly, some contextual factors were found to correlate closely with the selection of specific mobile Internet services. On the basis of these results, the article concludes with implications for developers of mobile Internet services.

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As the use of mobile data services has spread across the globe, the effect of cultural differences on user requirements has become important issue. To date, however, little research has been conducted on the role cultural factors play in the design of mobile data services. This paper proposes a set of critical design attributes for mobile data services that takes crosscultural differences into account. To determine these attributes, we devised a qualitative method and conducted in-depth long interviews in Korea, Japan, and Finland. We found 52 attributes considered important by mobile data service users, and 11 critical attributes that showed a clear correlation with characteristics of the user's culture. The paper concludes with a discussion of limitations and of implications for developers of mobile data services.