Vivo
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Vivo (Bovespa: VIVO3 / VIVO4; NYSE：VIV )是南美洲與巴西境內最大的行動電話服務供應商，有超過3000萬名使用者。 It originated from the merger of several Brazilian mobile phone operations under a joint-venture owned equally by Portuguese Portugal Telecom and Spanish Telefónica. Most of its network is IS-95/cdmaOne based, although there are parts of it which are still analog AMPS and parts (resulting from acquisition of other companies) which are TDMA(IS-136) based. The network is being gradually converted to CDMA2000.
In 2006, after years being the only CDMA network, Vivo announced a GSM network, and that it will operates in both CDMA and GSM. [1]
Vivo的品牌建立始於2003年4月13日。
The following operators merged to form Vivo:
Portugal Telecom-owned
- Telesp Celular (São Paulo)
- Global Telecom (Paraná, Santa Catarina)
Telefónica-owned
- Telefónica Celular (Rio de Janeiro, Espírito Santo, Rio Grande do Sul)
- Telebahia Celular (Bahia)
- Telergipe Celular (Sergipe)
Acquired by the joint venture
- NBT (Amazonas, Roraima, Pará, Amapá, Maranhão)
- TCO Celular (Goiás, the Brazilian Federal District, Acre, Tocantins, Mato Grosso, Mato Grosso do Sul)
Until 2006, the group was composed of six holding companies which, as announced in November 2005, merged into a single holding company, Vivo Participações S.A.. The operation was concluded on February 22nd 2006.
Vivo announced in late July that will start W-CDMA services in late 2006, while retaining its CDMA networks. Telefónica-owned movistar Chile operates both GSM and CDMA networks.
