About the network Pitfalls How to send FAQ
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L2 Ethereum — gas in cents, in ETH

Wallet for Arbitrum

Arbitrum is Ethereum’s “second floor”: same addresses and tokens, fees in cents, security from the main network. In Mitilena gas is paid in ETH (not ARB), and the network is shown on the signing screen. A free wallet in 30 seconds, no KYC.

Create a free Arbitrum wallet Network pitfalls
Free, no sign-up 18 networks in one app Offline signing on a card
ARB
Network passportArbitrum · ETH
CoinETH (gas), ARB — governance token
Address0x…, same as Ethereum
Feecents, in ETH
Gas for tokensneed ETH on Arbitrum
Confirmationseconds; bridge to Ethereum — up to 7 days
Memo / tagnone
TokensUSDT, USDC, USDC.e, ARB and more
Freezestables — issuer; ETH — nobody
About the network
ARB

Arbitrum

since 2021 · EVM, L2 on top of Ethereum

Why Arbitrum, who needs it, and how this network’s rules differ from the rest — short and to the point.

What for
Use Ethereum apps and hold tokens without mainnet fees. One of the largest DeFi ecosystems among L2s.
Who uses it
DEX and derivatives traders, stablecoin holders — Ethereum security at cent-level fees.
Quirk
A single sequencer batches transactions; the result is posted to Ethereum. Fast and cheap — while the sequencer is up.
Pitfalls

Four Arbitrum rules worth knowing before you send

Not abstract “crypto risks,” but the rules of this network. For each — what happens, and how Mitilena shows it before the Send button.

Pitfall 01

ARB is not gas

The ARB token is voting power in governance, not fuel. Fees are paid in ETH. “I have ARB, why won’t USDT send” — you need ETH specifically on Arbitrum, separate from ETH on Ethereum.

How we do it
We show the ETH balance specifically on Arbitrum and how much gas needs. Top up — withdraw from an exchange “on Arbitrum,” or swap inside the wallet.
Pitfall 02

Same address, different floor

The address looks the same on Ethereum and on Arbitrum; the balances do not. An exchange gave you an address “for Ethereum” — a transfer on Arbitrum to it goes to the wrong floor. The reverse is the same.

How we do it
The network is chosen explicitly and written in words on the signing screen. Before withdrawing to an exchange, check: Arbitrum One specifically.
Pitfall 03

Down to the first floor — a week

Withdrawing to Ethereum via the official bridge takes about 7 days (the challenge period). Fast bridges take minutes, but with a fee and a middleman.

How we do it
In Mitilena it is simpler to swap the token or withdraw through an exchange that accepts both networks — without a week of waiting.
Pitfall 04

USDC and USDC.e

As on Polygon, there are two USDCs here: native from Circle and bridged USDC.e. Different contracts, different lists on exchanges.

How we do it
We show both with contract addresses. Check with the venue which of the two it expects.
How to send

How to send ETH in Mitilena

01
Paste a 0x… address. Confirm the recipient expects the Arbitrum One network.
02
Pick the coin: ETH or a token. The address needs ETH on the Arbitrum network.
03
The fee is cents.
04
Check the signing screen: network, address, operation type. Sign.
05
Confirmation takes seconds. Do not bridge out to Ethereum unless you are ready to wait a week.
What happens to the key and what our server sees — step by step on How a transfer leaves.
Send ETHArbitrum
To
0x…
Amount
0.00 ETH≈ $0
Gascents, charged in ETH on Arbitrum
network quirk
NetworkArbitrum One — not Ethereum
simpler than it looks
!ETH balance on Arbitrum and on Ethereum are different balances
Continue
Send-form mock: fields and hints that appear specifically for the Arbitrum network.
Tokens

Tokens on Arbitrum: ERC-20 on Arbitrum

What there is
USDT, USDC from Circle and bridged USDC.e, ARB, DeFi project tokens.
Gas
A token transfer is paid in ETH on the Arbitrum network.
Freeze
Tether and Circle can freeze an address. Nobody can freeze ETH or ARB.
Fakes
Check the contract; lookalikes named USDT and ARB exist here too.
How we do it

What Mitilena can do on Arbitrum

Send and receive ETH and USDT
ETH and Arbitrum network tokens, address 0x…
Separate ETH balance for Arbitrum, gas estimate
Replace a stuck transaction with the same nonce
WalletConnect: DEXes and apps on Arbitrum
Offline signing in Mitilena Air
Swap inside the wallet
Hand off to Mitilena Air by sound — no cable or USB: the online phone plays the transaction, the offline one listens, signs, and replies
Mitilena NFC card
For larger amounts
Offline signing of ETH on an NFC card
The key is born on a device with no internet and lives on the card. The transaction goes to the offline phone by sound or QR — no cable, USB, or internet.
Ultimate · €369
FAQ

What people ask about Arbitrum

Why won’t USDT send on Arbitrum if I have ARB?

Gas on Arbitrum is paid in ETH, not ARB. You need ETH specifically on Arbitrum — separate from ETH on Ethereum.

What is the fee on Arbitrum?

Cents per transfer, in ETH. It gets more expensive when Ethereum gets more expensive — part of the fee goes there.

How long does a withdraw from Arbitrum to Ethereum take?

Via the official bridge — about 7 days. Fast bridges and exchanges — minutes, but with a fee and a middleman.

I sent ETH on Arbitrum to an exchange address for Ethereum. What now?

The funds sit on Arbitrum at that address. If the exchange accepts Arbitrum — write support with the hash; if not — only the key owner (the exchange) can return them, at their discretion.

Arbitrum wallet in 30 seconds — free, no sign-up

ETH and 17 more networks in one app · support@mitilena.com
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