Accurate evaluation of people's attachment to phones is crucial to understanding the impact of phone use in everyday life. The Young Adult Attachment to Phone Scale (YAPS) is a concise instrument, representing the first multi-dimensional measure of phone attachment. After item development involving focus groups with young adults and content validity analysis from attachment experts, a preliminary version of the YAPS was administered to 955 participants ages 18–29. Exploratory and confirmatory factor analyses supported a 2-dimension structure: Refuge, characterized by feeling safe with the phone and uncomfortable upon separation; and Burden, characterized by relief upon separation from the phone and the perception that it diminishes enjoyment of a given moment. Findings reflect the strong psychometric properties of the YAPS, including reliability, factorial validity and criterion validity with relevant constructs. The YAPS appears promising for future research aimed at understanding the nature of attachment to phones in human behavior.