NII Holdings, Inc. is a holding company. The Company operates through its subsidiary, Nextel Telecomunicacoes Ltda. (Nextel Brazil). The Company provides wireless communication services under the Nextel brand in Brazil with its principal operations located in urban and suburban centers with population densities and related transportation corridors of that country, including Rio de Janeiro and Sao Paulo. The Company operates in the Nextel Brazil segment. It also offers long-term evolution (LTE) services in Rio de Janeiro and provides services on its integrated digital enhanced network (iDEN) network throughout various regions in Brazil. The iDEN technology is a digital technology that is able to operate on non-contiguous spectrum frequencies. The Company offers services supported by a network that utilizes wideband code division multiple access (WCDMA) technology. Its services include mobile telephone voice service, wireless data services, and voice and data roaming services.