This study investigates the problem of the constraints to leisure of the low income population. It begins from a conceptual model of leisure constraints and verifies how the mobile phone can act as an entertainment tool due to these constraints. Therefore, the study: (i) identifies the main leisure constraints of the low income population based on the Crawford et al model; (ii) analyzes how the mobile phone, as an entertainment tool, can influence in these leisure constraints. Based on several interviews, the study classifies the main leisure constraints of the low income population and identifies how the mobile phone can benefit this population when used as an entertainment tool. The results show an adaptation of the Crawford model and how this model can help in the recognition of new market opportunities and the development of new products and services that can help the low income population to overcome the constraints observed in this study.