Send mobile credit to Brazil with crypto

Brazil's remittance market is less talked about than Mexico's but still huge — over $4 billion a year, mostly from Brazilian workers in the US, Portugal and Japan. Pre-paid mobile penetration is 60%+ of all SIMs in the country. FillUpCoin lets you top up a Vivo, Claro, TIM or Oi number in São Paulo, Fortaleza or Belém with crypto — in R$ denominations the subscriber immediately recognises from the carrier's own recharge app.

The cost comparison nobody talks about

Figures are typical. Western Union and Remitly fees vary by corridor, payment method, and promotional pricing. FillUpCoin only charges the crypto network fee — $0.50 on USDT TRC-20, pennies on Solana, $1-5 on Bitcoin depending on mempool.

Why send airtime instead of cash to Brazil

• Brazil is a top-5 country globally for crypto adoption. Both the sender (abroad) and the recipient (in Brazil) often already understand how it works.
• Vivo is the largest prepaid carrier, Claro second, TIM third. Oi is being wound down but still has rural subscribers.
• PIX is the Brazilian instant transfer system — fantastic domestically but requires both parties to have a Brazilian bank account. Crypto-airtime bridges the US-to-Brazil leg without needing PIX on the sender side.
• Prepaid plans in Brazil are packaged as 'Pré' or 'Pré Pago' with monthly R$ amounts. A R$30 recharge unlocks a specific month-long plan.
• Brazilian WhatsApp usage is universal — low airtime balance means no household communication, no mobile banking (Nubank, Inter use mobile notifications), and effectively no family contact.

The best crypto for Brazil top-ups

USDT TRC-20 for small to mid recharges; Bitcoin or Solana for Brazilians who already hold crypto natively.

You can also pay in Bitcoin (BTC on-chain), Ethereum (ETH), or Solana (SOL). The invoice is denominated in euros, so the sender sees the exact amount in crypto before confirming — no surprise exchange-rate movements.

How it looks from the sender's side

A Brazilian cleaner working in Boston sends R$50 to his mother in Minas Gerais every two weeks. Before FillUpCoin it was Remessa Online (which required ID and 2-3 business days). Now it's a USDT transfer on his phone during his lunch break, and the Vivo balance credits in Belo Horizonte in under a minute.

Common senders include United States, Portugal, Japan, United Kingdom and Spain — anywhere there's a Brazil diaspora with internet access, our service works. The only requirement on the sender side is a crypto wallet with a positive balance.

Step by step: send credit to Brazil with crypto

1. Open the Brazil refill page and pick the carrier your family uses — Vivo, Claro, TIM, Oi.
2. Enter the full Brazil mobile number including the country dial code. The site auto-formats it as you type.
3. Pick an amount from €15 to €200. The equivalent in local currency is shown live so you know exactly what the recipient will see.
4. Add an email — this is where the receipt and (if applicable) the voucher PIN land.
5. Pay the crypto invoice. We quote and lock the amount for 20 minutes. BTC, USDT (TRC-20 or ERC-20), ETH, or SOL — pick whichever has the lowest network fee at that moment.
6. The carrier processes the top-up as soon as the payment confirms on-chain. Your family in Brazil sees the balance credit by SMS from the carrier within a minute of confirmation.