In the last 15 years, different economic changes in Brazil allowed more users to have access to mobile phone services. The pre-paid plans, one of the main elements for this communication technology democratization, drove the increase of the penetration rates. With the increase of the purchase power and better financing systems, Brazilian low-income users became as eager for new services and devices as users with better financial condition. Thus, low-income users seek to fully use their mobile devices resources, since in many cases they do not have these resources in specific devices, such as digital camera, iPods, Playstation, etc. Although this group manages to consume more and better products, access to infrastructure and quality education is still too restrict. In this scenario, a research about the usability problems of mobile phones with users living in poor communities, was developed in a NGO in city of Rio de Janeiro.