Studies investigating the use of mobile technologies when other options are available are still relatively rare in the literature, with the majority of studies requiring that learners use a particular technology, either using their own devices or devices provided by the institution. One exception to this was a study by Stockwell (2010) that examined how learners in Japan perceived the use of mobile phones for language learning and how willing they were to engage in the activities. This study, however, was conducted prior to the spread of smart phones and it focused exclusively on learners in Japan. Thus, the purpose of the current study was to replicate this study, but differed in two ways. First, although it was run in essentially the same environment as the original study, in the current study the majority of learners owned smart phones. Second, the same system was used not only in Japan but also with learners studying at a university in Taiwan. Data were collected through server logs, post-treatment surveys and semi-structured interviews. The results are discussed in terms of the ways in which learners engaged in the activities on their mobile phones, and the effect of the mobile platform on the time taken to complete the activities over the course of the semester. These results were correlated with those from the original 2010 study to identify the potential effect of the smart phone.