The mobile system focuses its methodological design, supported in the software RUP Lifecycle until its analysis and design stage. Within this article are given to each of its iterations and deliverables. In the start phase, is a plan of stages, where the main use cases and the respective risks are identified. During the business modeling team becomes familiar with the operation of the company and the knowledge of their processes. In the elicitation of requirements, it is important to establish and maintain an agreement between customers or actors, about what the system could do, define the scope of the system and define a user for the system interface focused to the needs and goals of the user. In the design phase is the project plan, where use cases are completed and mitigated the risks. Finally, at the stage of analysis and design requirements are specified and described are to be implemented in the system, are also transformed the requirements to the design of the system, develops an architecture for the system and it suits the design that is consistent with the implementation environment.