This document discusses the development of mobile money systems and their potential to increase financial inclusion. It argues that mobile banking can provide the poor access to credit and savings, which are key tools for transforming livelihoods and market efficiency. However, mobile phones require a complete ecosystem of support including mobile networks, banks, agents and retailers. The paper aims to study successful mobile money models in Kenya and the Philippines, and examine what barriers prevent similar widespread adoption in Latin America, using Mexico as a case study. It reviews literature on mobile phone impacts such as increasing income, social capital and access to information for the poor.