This paper proposes a new business model framework that allows the design and analysis of value networks for mobile services in a public context. It starts from a validated business model framework that relies on 12 design parameters to evaluate business models on, and expands it by eight parameters to include important aspects that come into play when a public entity (i.e. a city government) becomes (or wants to become) involved in the value network. Given the quickly changing power relations in the mobile telecommunications industry, this framework offers both an academic and practical tool, enabling the comparison and analysis of mobile city service business models.