We explored the usage of smartphones in university classrooms across three different countries from the instructor's perspective. Using a qualitative, cross-cultural approach, we interviewed 30 instructors via semi-structured interviews to understand their viewpoints and experience with student smartphone usage in class. Instructors reported positive benefits that included active learning and the accessibility and sustainability of the smartphone as a learning tool. Participants also highlighted the challenges that include preventing critical thinking and direct instructor issues including distraction, loss of control, and discouragement. Instead of implementing new technology strategies in a top-down manner, organisations should co-create strategies with students and instructors to enhance motivation and focus. With technology being a common cohabitant in the classroom, this paper adds value from the perspective of instructors regarding their struggles, opportunities, and strategies when dealing with smartphones.