This research investigated the driving factors of mobile government diffusion as antecedents that expand the specificity and explanatory power of traditional technology adoption models in mobile contexts. A robust conceptual model for evaluating the adoption of electronic and mobile government services is proposed. Focusing on the first component of the model, namely, the drivers of m-government diffusion, five innovation attributes that influence the decision to adopt m-government were examined. Following a qualitative approach based on grounded theory, 91 mobile phone users were interviewed using a questionnaire. Five attributes of diffusion of innovation were investigated: relative advantage, complexity, compatibility, trialability, and observability. The qualitative data obtained was coded and analyzed for theme frequency distribution. The driving factors that emerged from the themes were: accessibility, efficiency, connectivity and time-saving (dominant factors); convenience, user-friendly, features and service provider (moderate factors), and cost and security (minor factors). Future research should consider how the key driving factors for m-government diffusion can be leveraged to facilitate greater adoption of and synergy between e- and m-government. Empirical validation of the conceptual model is recommended to confirm its appropriateness in enhancing the adoption of electronic and mobile government services in Sub-Saharan Africa.