Boost Mobile is a youth lifestyle brand and division of Sprint Corporation that offers premium wireless phones and services. Boost is among the most popular prepaid wireless brands in the U.S. Boost Mobile is a subsidiary of Sprint / Nextel, providing prepaid service, using the same iDEN technology as Nextel, and using Sprint Nextel's iDEN network. Boost also offers unlimited service using CDMA phones and Sprint Nextel's CDMA network.