Mobile phones have become increasingly widespread, affecting communication in both positive and negative ways in relationships. One such negative effect is "phubbing," where one partner ignores the other in favour of their phone, potentially undermining relationship satisfaction. This study examines the impact of partner phubbing on romantic relationship satisfaction, with a focus on the moderating role of attachment style. Data were collected through an online survey using the Generic Scale of Being Phubbed, the Relationship Assessment Scale, and the Experiences in Close Relationships Revised Scale. A total of 531 participants were involved, meeting the following criteria: (a) aged 18 and above, (b) in a romantic relationship (dating or married) for at least one year, (c) with a partner who has access to a mobile phone, and (d) not in a long-distance relationship. The results indicate that partner phubbing significantly predicts lower relationship satisfaction. Additionally, avoidant attachment style moderates this relationship, while anxious attachment does not significantly affect the relationship between phubbing and satisfaction. These findings suggest that partner phubbing negatively impacts relationship satisfaction, with attachment style— particularly avoidant attachment—playing a key role in this dynamic. / Telepon seluler kini semakin luas penggunaannya dan memengaruhi komunikasi dalam hubungan, baik secara positif maupun negatif. Salah satu dampak negatifnya adalah "phubbing", yaitu perilaku di mana salah satu pasangan mengabaikan pasangannya demi ponsel, yang dapat merusak kepuasan hubungan. Penelitian ini bertujuan untuk mengkaji dampak perilaku phubbing pasangan terhadap kepuasan hubungan romantis, dengan fokus pada peran moderasi gaya kelekatan. Data dikumpulkan melalui survei online menggunakan Generic Scale of Being Phubbed, Relationship Assessment Scale, dan Experiences in Close Relationships Revised Scale. Sebanyak 531 partisipan terlibat dalam penelitian ini, dengan kriteria sebagai berikut: (a) berusia 18 tahun ke atas, (b) berada dalam hubungan romantis (berpacaran atau menikah) selama minimal satu tahun, (c) memiliki pasangan yang dapat mengakses telepon seluler, dan (d) tidak dalam hubungan jarak jauh. Hasil penelitian menunjukkan bahwa perilaku phubbing pasangan secara signifikan memprediksi penurunan kepuasan hubungan (F(1, 529) = 140.911, p < 0.05). Selain itu, gaya kelekatan avoidant memoderasi hubungan ini (F(1, 527) = 30.366, p = 0.000), sementara gaya kelekatan anxious tidak mempengaruhi hubungan antara phubbing dan kepuasan secara signifikan (F(1, 527) = 0.215, p = 0.643). Temuan ini menunjukkan bahwa perilaku phubbing pasangan berdampak negatif terhadap kepuasan hubungan, dengan gaya kelekatan—terutama gaya kelekatan avoidant—berperan penting dalam dinamika ini.