Smartphones have a big advantage making infinite expandability possible by downloading new applications consistently through application store. These new devices provide us with multimedia features such as high quality voice calls, listening to music, and internet searching while previously cell phone just executed functions of voice calls, SMS, and PDA. So, recently people's interest in mobile communication service is on the increase. When 3G service reached the boundary of its capacity due to increase of continuous data volume, LTE and LTE-A was commercialized and is being used. The goal of this study is to find factors affecting the intention to adopt LTE service through a survey conducted in South Korea. The present study focused on the functional dimension including cost, speed, and security, the social dimension including social influence, and the personal dimension including personal innovativeness and self-efficacy to find out their effects on intention to accept LTE service. As a result, our study showed the cost and speed of LTE service were not significant variables. Also, there were no differences between the effects of perceived usefulness, perceived ease of use, and perceived enjoyment on intention to use LTE service.