Brazil
eSIM

The CPF Registration Problem

Brazil's ANATEL (telecommunications regulator) requires all prepaid SIM cards to be registered with a CPF number — Brazil's 11-digit individual taxpayer identification number. As a foreign tourist, you don't have one. Some airports will attempt to register you with a temporary CPF, but the process is unreliable, time-consuming (30–60 minutes), and sometimes simply fails. Ovosim operates under international roaming agreements that bypass CPF registration entirely. Scan and connect.

Rio de Janeiro: Coverage by Neighbourhood

Rio has excellent Vivo 4G/5G throughout the tourist zones. Copacabana, Ipanema, and Leblon beachfronts have strong 5G — essential for the beach photographer crowd. Santa Teresa (the bohemian hilltop neighbourhood) has solid 4G. The Lapa arches and nightlife district are well-covered. Rocinha and favela-adjacent areas can have intermittent signal due to terrain and building density. The Sugarloaf cable car and Christ the Redeemer both have Vivo 4G at the summits.

São Paulo: South America's Business Capital

São Paulo has some of the fastest 5G speeds in South America. The Paulista Avenue corridor, Vila Madalena, Itaim Bibi, and Jardins all have excellent Vivo 5G. The São Paulo Metro has 4G on most lines including the underground sections. Guarulhos (the airport suburb) is well-covered. The city's sprawl means you'll rely heavily on 99 Táxi, Uber, or iFood — all require constant data connectivity.

Amazon Coverage: The Honest Reality

The Brazilian Amazon covers 2.7 million square miles. Mobile coverage exists in Manaus (the main gateway city) and along the main river highways. Once you are on a river boat heading into the jungle, cellular signal disappears within 30–50km of Manaus. This is expected and affects all carriers equally. For deep Amazon tours, your operator will use satellite communication. Download offline maps of Manaus and the river routes before departure from the city.

Carnival in Rio: Network Congestion Management

Rio Carnival brings 6 million people to a city of 7 million. The Sambódromo and the street bloco parades create extreme network congestion. Vivo invests in temporary COW (Cell on Wheels) infrastructure during Carnival week, making it the best-performing network during the event. Expect slower speeds at peak parade times (21:00–03:00) but better connectivity than cheaper carrier alternatives.

Safety and Data: A Practical Note

Brazil's safety situation in tourist areas is well-documented. Travel smart: use a secondary phone or phone case for navigation rather than displaying your main device. However, having a working data connection is a safety tool — you can share your live location with travel companions, call your hotel, or contact emergency services. Being offline in an unfamiliar Brazilian city is a greater risk than using your phone carefully.