High-intensity smartphone usage among university students has the potential to alter social relationship dynamics and trigger a tendency toward "phubbing" the act of ignoring a conversation partner in favor of one's device. This quantitative study, employing a descriptive-associative design, aimed to analyze the impact of smartphone addiction and self-control levels on phubbing both individually and collectively among students in the Guidance and Counseling program (Class of 2024) at UIN Sjech M. Djamil Djambek Bukittinggi. From a total population of 110 students, a sample of 86 respondents was selected using proportional random sampling. Data were collected via instruments measuring smartphone addiction, self-control, and phubbing behavior, and subsequently analyzed using simple and multiple linear regression techniques via SPSS software. The findings indicate that smartphone addiction has a positive and significant influence on phubbing (p = 0.000 < 0.05), contributing 23.9% to the variance. Conversely, self-control was found to have a significant negative influence on phubbing (p = 0.000 < 0.05), with a contribution level of 32.3%. When tested simultaneously, both independent variables significantly influenced phubbing behavior with a combined contribution of 35.7%, while the remaining 64.3% was determined by variables outside the scope of this study. These findings underscore the pivotal roles that device addiction and self-control play in explaining phubbing behavior among Guidance and Counseling students.