This paper presents the results of fast user trial of multimedia services that are enabled when a mobile terminal has access to converged services over digital broadcast and mobile telecommunications networks. It first describes the motivations behind developing this system and describes the service scenarios that benefit most from it. It then provides an overview of the service components of the test case scenario. Finally, it presents the results of fast user trials on end users of the services that were developed. This work was conducted as part of the EU-funded CISMUNDUS project.Keywords: rapid prototype; fast user trial; broadcast and cellular service.Reference to this paper should be made as follows: Cosmas, J., Cruickshank, L., Elgohari, L., Itagaki, T., Lucas, A., Krishnapillai, K. and Zheng, L. (2005) 'Rapid prototyping and fast user trial of multimedia broadcast and cellular services ', Int. J. Mobile Communications, Vol. 3,No. 3,. Lizhi Zheng received his BS in Electronic Engineering from ShenZhen University, China in 1997 and his MS in Microelectronics and Telecommunication from Liverpool University, UK in 1998. He is currently a PhD candidate and also a research assistant working for the EU-funded project INSTINCT in the Department of Electronics and Computer Engineering, at Brunel University, UK. He has contributed towards the EU-funded projects CISMUNDUS and INSTINCT. His research interests are focused on parallel computing, video processing, converged broadcast and telecom service.