Mobile Top-Up with USDT (Tether)
Send mobile credit to any number worldwide using USDT on Arbitrum One, Avalanche C-Chain, BNB Chain (BEP20), Ethereum (ERC20), Polygon and Solana. USD-pegged so you pay exactly what you expect, with no exchange rate risk. 700+ operators, 130+ countries.
Enter the phone number
Select the country and enter the recipient's mobile number. CardsRelay auto-detects the operator.
Pay with USDT
Choose your top-up amount, select USDT at checkout, and send the exact amount shown. Rate locked while the checkout timer runs.
Airtime delivered
The network operator applies the credit directly. Most top-ups complete within seconds to a few minutes, depending on the operator.
130+ countries covered
Top up phones across Africa, Asia, Europe, the Americas, and the Middle East.
Why top up with USDT?
No price risk
USDT is pegged 1:1 to the US dollar. The amount you pay is close to the top-up value with no volatility between checkout and payment confirmation.
Low fees on cheaper networks
USDT on Solana, Polygon or BNB Chain usually costs cents to send and confirms quickly. A practical, low-cost way to pay for international mobile top-ups.
700+ operators, 130+ countries
MTN Nigeria, Airtel India, Safaricom Kenya, Globe Philippines, EE UK and hundreds more. The same wide network, paid with USDT.
Pay from the network you hold
USDT is accepted on Arbitrum One, Avalanche C-Chain, BNB Chain (BEP20), Ethereum (ERC20), Polygon and Solana. Pick the network your wallet already uses; the top-up is the same on each.
About mobile top-ups with USDT
USDT (Tether) is one of the most practical cryptocurrencies for mobile top-ups. Because it tracks the US dollar, the amount you pay is close to the face value of the top-up with no volatility risk between selecting an amount and confirming payment. CardsRelay accepts USDT on Arbitrum One, Avalanche C-Chain, BNB Chain (BEP20), Ethereum (ERC20), Polygon and Solana. Cheaper networks such as Solana, Polygon or BNB Chain usually cost cents to send, while Ethereum (ERC20) costs more. Every network works across the same 700+ operator network covering 130+ countries. Whether you are sending airtime to Nigeria, recharging a mobile in Pakistan, topping up data in Ghana, or adding prepaid credit to a UK number, USDT is one of the most predictable and low-cost ways to pay. Most mobile top-ups complete within seconds to a few minutes of payment confirmation.
Frequently asked questions
Can I top up a mobile number with USDT?
Yes. CardsRelay accepts USDT on Arbitrum One, Avalanche C-Chain, BNB Chain (BEP20), Ethereum (ERC20), Polygon and Solana for mobile top-ups on 700+ operators in 130+ countries. Enter the number, select the operator, pick an amount, and pay with USDT.
Is there a price risk when paying with USDT for a top-up?
No. USDT is pegged to the US dollar. The amount you pay is close to the face value of the top-up. There is no exchange rate risk between checkout and confirmation.
Which USDT network is fastest?
Solana is usually the quickest and cheapest. Polygon and BNB Chain are also low cost. Ethereum (ERC20) works fine but network fees are higher.
What countries can I send mobile credit to with USDT?
130+ countries are covered: Nigeria, India, Ghana, Pakistan, Kenya, Mexico, Bangladesh, Philippines, South Africa, UK, Netherlands, Australia and many more.
Can I send airtime to Nigeria with USDT?
Yes. MTN Nigeria, Airtel Nigeria, Glo, and 9mobile are all supported. USDT on a low-fee network such as Solana is a particularly efficient choice: small fees, fast confirmation, USD value so you know exactly what you are sending.
Which USDT networks can I use for top-ups?
USDT is accepted on Arbitrum One, Avalanche C-Chain, BNB Chain (BEP20), Ethereum (ERC20), Polygon and Solana. All are the same USDT. Cheaper networks such as Solana, Polygon or BNB Chain usually cost cents, while Ethereum (ERC20) costs more in gas. The top-up amount and operator coverage are identical on every network.
Ready to top up?
Enter a phone number, choose an amount, and pay with USDT. Most top-ups apply within minutes.
Top up a phone now