This paper is a contrastive study of Korean and Japan phone use, focusing on the act of choosing whether to use a phone call or a text-message with a cellular phone. Differentiating from previous studies which survey the actual situation separately, we investigated some factors influencing the choice both quantitatively and qualitatively. Through the analysis, we found out that the users of cellular phones use a phone call and a text-message not randomly but regularly. We confirmed honorific behavior in information behavior in regular media use. The appearance of a new form of honorific behavior, the choice of language media, is suggested. On the other hand, we can point out that the usual communication styles can be reflected in the choice. In short, by analyzing the choice in a cellular phone, we can find out that communication as a “human” user is alive in a “machine”, a cellular phone.