This phenomenological study explored the lived experiences of junior high school mathematics teachers as they navigate digital education in the 21st century. Specifically, it examined teachers’ experiences with technology-mediated mathematics instruction, identified the coping strategies they used to address digital challenges, and generated professional development insights that may strengthen support systems for mathematics teachers in digital learning environments. The study employed a qualitative phenomenological research design. Nine junior high school mathematics teachers from selected public secondary schools in Cluster 13 of Paquibato District, Division of Davao City, were purposively selected as participants. Data were gathered through in-depth interviews and analyzed using thematic and framework analysis. Findings revealed that teachers experienced both opportunities and challenges in digital education. They adapted instructional practices through interactive digital tools, contextualized learning activities, and flexible teaching approaches. However, they also encountered challenges related to unstable internet connectivity, inadequate digital resources, limited training, and increased workload. Despite these difficulties, teachers demonstrated resilience through self-directed learning, collaboration, and adaptive instructional strategies. The findings further emphasized the importance of institutional support, continuous professional development, and improved ICT infrastructure in strengthening digital mathematics instruction. The study implied that effective digital education requires holistic support systems integrating teacher training, technological resources, and adaptive educational leadership. It is recommended that schools and educational leaders strengthen professional development initiatives, collaborative learning communities, and digital infrastructure to support mathematics teachers in the digital age better.