Public managers at all levels of government are increasingly facing a great diversity of technological changes, from the arrival and rapid adoption of social media to the emergence and growing popularity of mobile phones and related technologies. Many times, they need to make decisions regarding the implementation of mobile government without the necessary knowledge and tools. Based on a review of recent literature and a set of group and individual interviews, this paper proposes a preliminary multidimensional framework to assess an agency's readiness for mobile government. The variables included in the framework are categorized into three main dimensions: (1) Technical, (2) Organizational, and (3) Workforce Environments. The paper also shows how these dimensions have been integrated into the prototype of a tool called Mobile-Readiness Assessment, which public managers could use to better understand mobile technologies and help them ask the right questions and collect appropriate data before starting a mobile government project.