This study examines learner receptiveness towards using smartphones to enhance EFL learning at a Korean university in various manners and contexts, exploring predictors of learner attitude towards mobile devices. A survey of 159 L2 learners was conducted within a college English program. Results indicated that nearly half of the participants demonstrated positivity towards integration, while others were ambivalent, with only a small proportion actively against integration. In the classroom, attitude was most favorable towards using smartphones as mini-computers with Wi-Fi capabilities to obtain information in collaborative projects. Outside class, interaction with classmates and teachers via email, voicemail, and video clip was favored. Multiple regression analysis indicated that belief in the language learning potential of smartphones was a significant predictor of attitude across usage contexts, as was inherent device motivation. Motivation to develop L2 digital literacy was a significant predictor outside the classroom. Further, learners most receptive to smartphones were consistently so inside and outside the classroom.