Purpose: The purpose of this study was to examine the effectiveness of smartphone use to enhance self-efficacy and decrease loneliness in elders through communication using the SNS Program Methods: Participants in this study were assigned to the experimental group (25) or control group (25). Data were collected from June 3 to July 12, 2019. For this study, the communication Program through SNS was run once for a total of 12 sessions. All data were analyzed using SPSS version 18.0 program, 𝑥2 test, t-test, Repeated Measure ANOVA and Fisher's exact test. Results: It was found that H1 was supported (z=-4.12, p=.005) as "the experimental group participating in the communication Program through SNS had greater self-efficacy than the control group". H2 was supported as "the experimental group participating in the communication Program through SNS had less loneliness than the control group", (z=3.20, p<.001). Conclusion: This basic information may be used as an intervention on communication Program through SNS. Findings suggest the necessity of improving self-efficacy and reduction of loneliness through an intervention communication Program through SNS.