How do we build urban resilience through key areas of critical infrastructure such as mobile communications? Mobile digital communication networks, encompassing commercial mobile and public wi-fi platforms, are ubiquitous in Australian cities, and digital inclusion has emerged as a major theme in metropolitan-level strategic planning (McShane, Wilson & Meredyth, 2014). However, while we have seen a dramatic uptake of internet-enabled mobile devices, to date little is understood about the politics, implementation and role of mobile communications in building resilient cities. Using mobile communications as an example, the paper focuses on critically exploring the implications of our reliance on complex technological networks with reference to urban Australia.