How to add Arbitrum to Trust Wallet? (Network Setup)

Adding Arbitrum Network to Trust Wallet

1. Open Trust Wallet and tap the wallet icon in the bottom right corner to access your wallet dashboard.

2. Tap the network name—usually displayed at the top center—such as “Ethereum” or “BSC”. This opens the network selection menu.

3. Scroll down and select “Add Custom Network” at the bottom of the list.

4. Enter the Arbitrum One mainnet parameters manually: Network Name = Arbitrum One, RPC URL = https://arb1.arbitrum.io/rpc, Chain ID = 42161, Symbol = ETH, Block Explorer URL = https://arbiscan.io.

5. Confirm the settings and tap “Save”. The Arbitrum network will now appear in your network list and be selectable.

Verifying Arbitrum Integration

1. After saving, return to the wallet home screen and ensure “Arbitrum One” appears next to your ETH balance.

2. Tap the ETH token row to view its contract details; the address should reflect the official Arbitrum ETH token: 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1.

3. Initiate a small test transaction—send 0.001 ETH from an Arbitrum-compatible exchange or bridge to your Trust Wallet address while on the Arbitrum network.

4. Check Arbiscan using your wallet address to confirm receipt and block confirmation status within seconds.

5. Observe that gas fees display in Gwei units significantly lower than Ethereum Mainnet, often under 0.1 Gwei for simple transfers.

Importing Arbitrum Tokens Manually

1. Navigate to the “Receive” tab, confirm the network is set to Arbitrum One, then tap the “+” icon in the top right corner of the asset list.

2. Select “Custom Token”, choose “ERC-20”, and input the token’s Arbitrum contract address—such as 0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8 for USDC on Arbitrum.

3. Tap “Next”, verify the token symbol (USDC), decimals (6), and name (USD Coin) match official Arbitrum USDC data.

4. Tap “Add” to include the token in your wallet’s asset list; it will appear with its current balance if funds exist on-chain.

5. Repeat this process for other Arbitrum-native tokens like ARB, GMX, or MAGIC using their verified Arbitrum contract addresses.

Troubleshooting Common Setup Errors

1. If transactions fail with “Invalid RPC” or “Network not found”, recheck the RPC URL—https://arb1.arbitrum.io/rpc must be entered exactly without trailing slashes or spaces.

2. When balances do not update, force-close Trust Wallet and reopen it while connected to Wi-Fi or stable mobile data—Arbitrum node sync may lag on weak connections.

3. If token balances show zero despite confirmed on-chain holdings, verify the token’s contract was added under Arbitrum One—not Ethereum Mainnet—and that the wallet address matches the one used on Arbiscan.

4. Avoid using third-party RPC endpoints unless explicitly audited; unofficial nodes may return stale blocks or reject valid transactions.

5. Do not confuse Arbitrum One with Arbitrum Nova—Nova uses Chain ID 42170 and different RPC endpoints; mixing them causes asset visibility failures.

Frequently Asked Questions

Q1. Can I use the same seed phrase for Arbitrum and Ethereum in Trust Wallet?A1. Yes. Trust Wallet derives Arbitrum addresses deterministically from the same BIP-39 mnemonic used for Ethereum, enabling seamless cross-chain key management.

Q2. Why does my ETH balance show zero after switching to Arbitrum One?A2. ETH on Ethereum Mainnet is not automatically mirrored on Arbitrum. You must bridge ETH via official tools like the Arbitrum Bridge before it appears in Trust Wallet on Arbitrum.

Q3. Does Trust Wallet support Arbitrum staking or yield features natively?A3. No. Trust Wallet functions as a non-custodial key manager and does not provide built-in staking interfaces for Arbitrum tokens like ARB or liquidity pools.

Q4. What happens if I send Arbitrum tokens to an Ethereum Mainnet address?A4. The tokens are irretrievably lost. Arbitrum and Ethereum are separate execution layers with distinct state trees; cross-layer transfers require bridging protocols.