Boost Mobile is hoping to get a rise out of the young and the restless mobile phone market. A subsidiary of Sprint Nextel, the unit markets the parent company's walkie-talkie-style mobile service on a pay-as-you-go basis. Boost Mobile, which has more than 3 million subscribers, also offers prepaid calling cards sold under the Re-Boost brand. Because Boost Mobile tailors the marketing message for its products and services to the youth market, the company's mobile data services and entertainment offerings are a central part of its product package. These services include text messaging, wireless Internet access, Java-enabled games, and music ring tones and celebrity voice tones.