Vivo Logo — Vivo SA is a company of mobile telephony , fixed telephony services and broadband in Brazil . Initially formed by a merger of existing mobile phone companies in Brazil, previously was run by a joint venture of companies Telefonica and Portugal Telecom , but the former bought the latter throughout the company in the second half of 2010. A 2009 data, Vivo SA had 45.6 million customers at home. Technology uses CDMA / EVDO ,GSM / EDGE , TDMA and WCDMA / HSPA ( 3G ) in mobile phones. Since 2007 the network using AMPS networks simultaneously with TDMAand CDMA , but now is off to release the electromagnetic spectrum to deploy GSM network. It is the mobile operator largest by market share in Brazil. In the first quarter of 2012, made the unification of telephony services with the services offered in the state of São Paulo (formerly “Telefonica São Paulo”) under the “Live” and is currently the only brand of telephony Telefonica Group in Brazil.
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Before unification, some companies used the technology CDMA , but in 2007, Vivid has adapted the technology GSM , which has already been implemented in all states of Brazil, and Mexico City, becoming the sole operator who works with technology CDMA , TDMA and GSM in Brazil. More