Vivo (mobile phone network)
Image:Vivo-bluelogo.jpg
Besides blue, the Vivo logo can be orange, green, red or purple (yellow was initially used, but later replaced by orange)
Vivo is the largest mobile phone carrier in Brazil, and the third largest in Latin America with over 28 million users, behind Telcel and Telefónica-owned movistar. It originated from the merger of Brazilian mobile phone operations of Portugal Telecom and 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.
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