A telephone interview is a widely used qualitative research technique in which a trained moderator engages a participant in a one-on-one conversation conducted by phone. It is commonly used in market research, customer experience studies, and stakeholder consultations where geographic reach or participant convenience is a priority. The method supports open-ended questioning, probing, and follow-up, making it suitable for exploring attitudes, motivations, and behaviours in depth. While telephone interviews lack visual cues, they remain a practical and accessible format for collecting rich qualitative data at scale, particularly when video participation is not feasible for the target audience.