Buy an eSIM with TRON: Pay with TRX or USDT on TRC-20

You can buy a HelloSIM travel eSIM from a TRON wallet in two ways: with TRX, the network's own coin, or with Tether (USDT) on TRON, known as TRC-20. At checkout choose "Pay with crypto", pick TRX or USDT on TRON (TRC-20) on the secure payment page, and send the exact amount shown to the address it gives you.

This guide is for people whose crypto already sits on TRON. It explains which of the two assets to pay with, how fees work when you send from your own TRON wallet, and how TRC-20 differs from the other USDT networks you will see on the payment page.

Pay with TRX or USDT TRC-20: which one?

Both options run on the same network, and in most TRON wallets they sit at the same address. On the payment page, however, they are two separate choices, each with its own amount.

• USDT on TRON (TRC-20) fits if your balance is in USDT. Plans are priced in euros and USDT is designed to track the US dollar, so the USDT figure will not match the euro price; the page converts it at the moment you pay.
• TRX fits if your balance is in TRX. The page converts the euro price into TRX at the moment of payment.

The practical rule is to pay with whichever asset you already have, so there is nothing to convert first. Whichever you pick, send that asset and not the other one, in the exact amount shown.

How TRON fees work when you pay for an eSIM

Network fees are paid by the sender, on top of the amount shown on the payment page. On TRON those fees are paid in TRX, through two network resources called bandwidth and energy. A plain TRX transfer mainly uses bandwidth; a USDT transfer, because USDT is a TRC-20 token, also uses energy.

Two consequences follow:

• A wallet holding only USDT usually cannot send it. Keep some TRX in the same wallet to cover the fee. Your wallet shows the fee before you confirm.
• Exchange withdrawals work differently. The exchange charges its own withdrawal fee, often taken out of the amount you enter. Check the amount that will actually arrive, because sending less than the amount shown can leave the payment incomplete. Overpaying still completes the order.

USDT TRC-20 vs ERC-20, BEP-20 and the other networks

HelloSIM accepts USDT on eight networks: TRON (TRC-20), Ethereum (ERC-20), BNB Smart Chain (BEP-20), TON, Solana, Polygon, Arbitrum and Avalanche. They are separate ledgers. A USDT balance on TRON is not visible on Ethereum, and the other way around.

For someone paying from TRON, three differences matter:

• Address format. TRON addresses start with a T. Ethereum, BNB Smart Chain, Polygon, Arbitrum and Avalanche share addresses that start with 0x, and TON and Solana have formats of their own.
• Fee coin. On TRON the fee is paid in TRX. On the other networks it is paid in that network's own coin, such as ETH on Ethereum or BNB on BNB Smart Chain.
• Labels. Exchanges may call the TRON option "TRC20", "TRON" or "TRX". For USDT, all three point to the same network.

Whatever the label, the network you select on the payment page and the network you send on must be the same. If your USDT is actually on another network, select that network on the payment page instead of TRC-20.

How to pay for an eSIM from a TRON wallet, step by step

1. 1Check your balance. Note whether you are paying with TRX or USDT, and if it is USDT from your own wallet, make sure there is TRX for the fee.
2. 2Choose a plan. On the HelloSIM website or in the iPhone or Android app, pick a country, regional or Global plan and enter your email address.
3. 3Select "Pay with crypto". A secure hosted payment page opens.
4. 4Pick TRX, or USDT on TRON (TRC-20). The page shows a payment address, a QR code and the exact amount.
5. 5Scan the QR code or paste the address. Compare the first and last few characters with the payment page.
6. 6Enter the exact amount and send. The payment request stays open for 1 hour.
7. 7Receive the eSIM. Once the payment is confirmed on the blockchain, it appears in your account or the app and the QR code is emailed.

Copy the address from the payment page, every time

Look-alike address scams are common on TRON and other networks. Someone sends a tiny transfer from an address that shares its first and last characters with one you have used, hoping you will copy it from your transaction history later. The defence is a habit: take the address only from the current payment page or its QR code, never from your history, an old order or a message.

Each payment request is open for 1 hour. If it expires before you send, start a new one from checkout and never send to an expired request. Blockchain transfers cannot be recalled once sent.

What you need to pay from TRON

• An email address to receive the eSIM (guest checkout works)
• A phone that supports eSIM and is carrier-unlocked
• TRX, or USDT on TRON plus some TRX for the fee
• A Wi-Fi connection to install the eSIM

The minimum for a crypto payment is €1.00.

Delivery, validity and refunds

The eSIM is issued once the payment is confirmed on the blockchain. Timing depends on the coin and network, so HelloSIM does not promise a number of minutes; buy before you travel rather than on arrival. Doing so costs nothing, because validity starts when the eSIM first connects to a network at your destination, and you can install it over Wi-Fi at home.

All sales are final, with no refunds once paid. The eSIM is data-only, with no phone number, and an account makes it easy to manage your eSIMs and top up later. You can also top up your HelloSIM wallet balance with crypto.

From TRON wallet to mobile data

Pick TRX or USDT on TRC-20, keep a little TRX for the fee, copy the address from the payment page and send the exact amount within the hour. Once the payment confirms, your eSIM is waiting in your account and your inbox.