Mobile Services and SIM Cards: how it works in Brazil — first-hand
Short answer
To purchase a local physical SIM card in Brazil, you typically need a CPF number, though staff at some operator stores may bypass this requirement. For a more efficient alternative without local bureaucracy, purchase an eSIM online via platforms like Trip.com prior to your arrival.
From real experience
To purchase and register a local SIM card in Brazil, a valid CPF (taxpayer registry number) matching your date of birth is normally required.
If you do not have a CPF, you can try buying a prepaid SIM card (e.g., Vivo) in physical operator stores by asking the staff to bypass the requirement, which costs around 18 BRL for the card and 30 BRL for a top-up.
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To get a cheap eSIM for Brazil without needing a local CPF, use Trip.com.
Switch the website language to English and search for 'eSim Brazil 5G'. This option is often about 50% cheaper than competitors like Airalo or Yesim, and allows payments using Russian bank cards.
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To purchase and activate a prepaid mobile SIM card in Brazil without an official tax registration number (CPF), travelers can use online Brazilian CPF generators ('generator cpf brasil') to bypass the verification step.
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To purchase a physical local SIM card in Brazil, a CPF (Cadastro de Pessoas Físicas) number is mandatory.
For travelers, obtaining an eSIM online prior to arrival is a more efficient alternative to avoid local bureaucracy.