Jambo! GRU is South America's busiest gateway, and the taxi queue is no place to hunt for Wi-Fi. Install a JamboSim Brazil eSIM before you fly and land already online.
Airport Wi-Fi works inside the terminals, but you need data the moment you order a ride or message your host. An eSIM switches on automatically when you land.
Central São Paulo is about 45 to 90 minutes away depending on traffic; the Airport Bus Service and app rides are the easiest options.
GRU has Terminals 1, 2 and 3. Local time is BRT (UTC-3).
99 is a strong local alternative
Yes. Your phone connects to a Brazilian network as soon as you land.
Yes, mobile data covers ride apps, maps and banking apps.
Install it at home over Wi-Fi and switch it on when you arrive.