Useful Info about celular
Buy a celular sim, called chip in Brazil. VIVO and TIM have the best cover. Activate mobile internet separately.
When placing a call somewhere with the Brazilian celular, you have to add the special provider number before the city code.
At VIVO it was 15, so to call a number with a VIVO SIM to São Paulo, dial : 0 + 15 + 12 +xxxxx