We present our work on composing mobile Web services, denoted by M-services, in the wireless world. The wireless world has its own features that make it completely different from the wired world. For instance, new communication means need to be deployed, new user-friendly services need to be offered, and new types of specification techniques need to be provided. One of these techniques consists of using service chart diagrams in the specification of a composition process of M-services. A service chart diagram leverages the traditional state chart diagram of UML and specifies a service from five perspectives: state, flow, organization, information, and location.