MUM 2025, the 24th International Conference on Mobile and Ubiquitous Multimedia Enna, Italy, December 1-4, 2025 The 24th International Conference on Mobile and Ubiquitous Multimedia (MUM 2025) will take place in Enna, Italy, December 1–4. MUM is a leading forum for advances in mobile and ubiquitous multimedia, bringing together academics and practitioners to discuss interaction techniques, user research, system development, and more. We invite submissions to Posters (3 pages), Demos (max 3000 words), and the Doctoral Colloquium (2–4 pages). • Submission deadline: October 9, 2025 (AoE) • Notification: October 23, 2025 Additionally, we are seeking enthusiastic Student Volunteers (SVs) to support the smooth running of the conference and have a great lineup of exciting workshops<https://www.mum-conf.org/2025/index.php?web=acceptedworkshops>. Registration is now open! Visit https://www.mum-conf.org<https://www.mum-conf.org/> for all (other) details.