By Ben Tavener, Senior Contributing Reporter
RIO DE JANEIRO, BRAZIL – Telecoms giant Oi launched its high-speed 4G mobile internet service in Rio on Thursday, becoming the city’s second operator to offer the service. Rival operator Claro launched its 4G services in cities hosting the FIFA Confederations Cup, including Rio, last week. TIM and Vivo are launching their 4G packages next week, O Globo newspaper says.
Oi will reportedly launch its 4G . . .
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