Top-Tier Customer Platform

SK Telecom and Helio have built a proprietary postpaid customer platform, with highly advanced web architecture. This platform features a broad range of fully integrated functionality for postpaid, prepaid and hybrid customer support, including real-time rating engine, billing platform, and credit review. It will allow Virgin Mobile USA to immediately enter the postpaid market, implementation for which on a stand-alone basis would require a minimum of 12 months.

Greatly Expanded Handset and Data Offerings

Helio has built its reputation by providing its approximately 170,000 customers with highly sophisticated data services, and Virgin Mobile USA will leverage these advanced applications along with Helio’s established postpaid platform, social networking content and feature-rich handsets to provide its customers with the latest in wireless products and services. This acquisition will allow Virgin Mobile USA to provide current and future customers with unique user applications on Sprint’s high-speed EV-DO network, including Google maps with GPS, as well as integrated You Tube and MySpace applications.

Conference Call Information

Virgin Mobile USA will host a conference call Friday, June 27, 2008 at 11:00 A.M. (EDT) with access available via Internet and telephone. Investors and analysts may participate in the live conference call by dialing 888.354.3598 (toll-free domestic) or 706.643.8861 (international); passcode: 52636305. Please register at least 10 minutes before the conference call begins. A replay of the call will be available for one week via telephone starting approximately two hours after the call ends. The replay can be accessed at 800.642.1687 (toll-free domestic) or 706.645.9291 (international); passcode: 52636305. The webcast will be archived on Virgin Mobile USA’s web site for two weeks after the call at http://investorrelations.virginmobileusa.com/.