Blockchain Cryptocurrency
How to add Arbitrum to Trust Wallet

1 year ago By Blockchain Mata

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Are you tired of high transaction fees and slow processing times on Ethereum? Well, you're not alone! That's why the buzz around Arbitrum is getting louder and louder. This Layer 2 scaling solution promises to significantly reduce gas fees and improve transaction speeds, making decentralized applications more accessible to everyone. And now, the exciting news is that Trust Wallet, the popular mobile wallet for Ethereum and other cryptocurrencies, is adding support for Arbitrum! In this article, we'll explore what Arbitrum is, why it's generating so much excitement, and how Trust Wallet's integration will benefit its users. So, buckle up and let's dive into the future of decentralized finance with Arbitrum and Trust Wallet. Read to the end for a tip on how to add a network automatically to trust wallet. 

What is Arbitrum?: An overview

Arbitrum is a Layer 2 scaling solution for Ethereum that aims to solve the issues of high fees and slow processing times that have been plaguing the Ethereum network. It is a technology that operates as a sidechain to the Ethereum network, meaning that it is a separate chain that can communicate with the main Ethereum chain.

Arbitrum is developed by Offchain Labs, a company founded by three former researchers from Princeton University's Department of Computer Science. According to their website, Arbitrum is designed to be "fast, simple, and secure," and can handle high volumes of transactions while maintaining Ethereum-level security.

Arbitrum uses a unique approach called Optimistic Rollups, which allows for the processing of transactions off-chain and then submitting a proof of the transactions to the main Ethereum chain. This approach significantly reduces the amount of data that needs to be processed on the main Ethereum chain, leading to faster transaction processing times and lower fees.

Optimistic Rollups work by assuming that transactions are valid unless proven otherwise. This means that transactions can be processed off-chain without having to wait for the network to confirm their validity. In the unlikely event that a transaction is found to be invalid, it can be rolled back and the correct transaction can be processed.

The use of Optimistic Rollups as a scaling solution is not unique to Arbitrum, but it is gaining traction in the Ethereum community as a promising approach to improving the network's scalability. Other Layer 2 solutions using Optimistic Rollups include Optimism, which launched in July 2021, and StarkWare, which has been in development for several years.

Overall, Arbitrum's Layer 2 solution has the potential to significantly improve the scalability and accessibility of decentralized applications on Ethereum, while still maintaining the security and decentralization of the main Ethereum network.

Its benefits

Arbitrum offers several benefits for users and developers on the Ethereum network. These include:

  1. Scalability: Arbitrum's Layer 2 solution using Optimistic Rollups significantly reduces the load on the main Ethereum network, enabling it to handle a much larger volume of transactions with lower fees and faster processing times.

  2. Interoperability: Arbitrum is designed to be compatible with existing Ethereum smart contracts and tools, making it easy for developers to migrate their applications to the Arbitrum network.

  3. Security: Arbitrum maintains the same level of security as the Ethereum network, as all transactions are validated on the main chain using proofs generated by the Arbitrum sidechain.

  4. Decentralization: Arbitrum is a decentralized network, meaning that no single entity controls the network or can manipulate transactions.

Arbitrum's Layer 2 solution offers a promising approach to addressing the scalability issues facing the Ethereum network, while maintaining its security and decentralization.

What is a Trust Wallet?

Trust Wallet is a popular mobile cryptocurrency wallet that provides a secure and user-friendly platform for managing Ethereum and other cryptocurrencies. It was founded in 2017 by Viktor Radchenko, and later acquired by the cryptocurrency exchange Binance in 2018.

One of the key features of Trust Wallet is its support for a wide range of cryptocurrencies, making it a one-stop-shop for managing multiple digital assets. Trust Wallet is also designed to be decentralized, which means that users have full control over their private keys and can access their funds directly without the need for a centralized intermediary.

Trust Wallet's popularity has grown significantly since its inception, with over 5 million users around the world. The wallet is available for both iOS and Android devices, and is known for its ease of use, security, and reliability.

In addition to its core wallet features, Trust Wallet has also integrated with various decentralized finance (DeFi) protocols, such as Compound and Uniswap, enabling users to participate in yield farming, staking, and other DeFi activities. This integration has helped to establish Trust Wallet as a leading platform for engaging with the emerging DeFi ecosystem. It supports various networks and protocols, and is designed to provide users with a secure and easy-to-use platform to manage their digital assets. Trust Wallet's support for multiple networks and protocols makes it a versatile and flexible cryptocurrency wallet that can meet the needs of different users.

Now with the inclusion of support for Arbitrum, Trust Wallet is further expanding its capabilities, allowing users to benefit from the fast and affordable transactions offered by this Layer 2 scaling solution. Trust Wallet's integration with Arbitrum is expected to provide a significant boost to the adoption of this promising technology, as more users are able to access the benefits of Optimistic Rollups directly from their mobile wallet.

How to add Arbitrum to Trust Wallet: Why Add Arbitrum to Trust Wallet?

We earlier learnt that Arbitrum is a Layer 2 scaling solution for Ethereum that aims to increase the scalability and efficiency of the Ethereum network. By adding Arbitrum to Trust Wallet, users can enjoy several benefits, including:

  1. Faster and cheaper transactions: With Arbitrum, users can enjoy faster and cheaper transactions on the Ethereum network. This is because Arbitrum uses an Optimistic Rollup technology that aggregates multiple transactions into a single batch, reducing the cost and time required to process each transaction.

  2. Improved scalability: Arbitrum is designed to improve the scalability of the Ethereum network by processing a large number of transactions off-chain and then committing them to the Ethereum network in batches. This helps to reduce network congestion and increase the capacity of the Ethereum network.

  3. Support for smart contracts: Arbitrum supports smart contracts, which are self-executing contracts with the terms of the agreement between buyer and seller being directly written into lines of code. This means that Trust Wallet users can easily interact with decentralized applications (DApps) built on the Ethereum network using smart contracts.

  4. Compatibility with Ethereum: Arbitrum is fully compatible with the Ethereum network, which means that users can easily transfer their Ethereum assets to and from Arbitrum. This ensures that Trust Wallet users can seamlessly access their Ethereum assets on the Arbitrum network.

  5. Enhanced security: Arbitrum uses a decentralized and trustless architecture, which ensures that the security of the network is maintained. Additionally, Trust Wallet uses advanced security measures such as seed phrases, two-factor authentication, and biometric authentication to ensure the safety and security of user funds.

In essence, adding Arbitrum to Trust Wallet provides users with access to a fast, secure, and scalable Layer 2 solution for Ethereum, which enhances the user experience and enables seamless interaction with the decentralized ecosystem.

How Do I Add Arbitrum to a Trust Wallet?

Now we have looked at a brief overview of Arbitrum and Trust Wallet. Are you interested in using Arbitrum, one of the most promising Layer 2 scaling solutions for Ethereum, on your Trust Wallet? Adding Arbitrum to your Trust Wallet is easy and straightforward. 

Next is the step-by-step instructions on how to do so.

Step 1: Download Trust Wallet

If you haven't already done so, download Trust Wallet from your app store. Trust Wallet is available on both iOS and Android devices.

Step 2: Open Trust Wallet

Once you have downloaded and installed Trust Wallet, open the app and navigate to the "Settings" menu by clicking on the gear icon located in the bottom right corner of the screen.

Step 3: Add a Network

Scroll down to the "Networks" section and click on the "Add Network" button.

Step 4: Choose the Network Type

Select "Custom" as the network type.

Step 5: Fill Out Network Details

Fill out the following network details:

  • Network Name: Arbitrum

  • New RPC URL:

  • Chain ID: 42161

  • Symbol: 

  • Block Explorer URL: 

Step 6: Save Network

After filling out the network details, click on the "Save" button located in the top right corner of the screen.

Step 7: Switch to Arbitrum Network

Once you have saved the Arbitrum network, you can switch to it by clicking on the network switcher located at the top of the screen and selecting "Arbitrum" from the list of available networks.

Congratulations! You have successfully added the Arbitrum network to your Trust Wallet. Now you can enjoy faster and cheaper transactions on Ethereum using Arbitrum.


Chainlist is a blockchain-based platform that lists Ethereum Virtual Machine (EVM) networks and helps you add new networks to your wallet.

Using the Chainlist dApp can make adding a new network like Arbitrum to Trust Wallet much easier and faster. It automates the process of adding a custom network by providing a list of pre-configured networks, and allows you to add them to your Trust Wallet with just a few clicks.

To use the Chainlist dApp, open it in the dApp browser of your Trust Wallet, select "Connect" to connect your wallet, and then select "Chain" to see the list of available networks. From there, you can select "Add to Trust Wallet" next to the Arbitrum network, and it will be added to your wallet automatically.

How to add Arbitrum to Trust Wallet: Common Issues and Troubleshooting

Here are some possible solutions to the common issues that users may encounter when adding Arbitrum to Trust Wallet:

  1. Incorrect RPC URL: Double-check the RPC endpoint URL for Arbitrum and make sure it is correct. If you are unsure, check the official Arbitrum documentation or community forums for the correct URL.

  2. Network not listed: Try closing and reopening your wallet to see if the network appears. If not, try adding the network again with the correct information. You can also try resetting your wallet by clearing the cache and data in your phone's settings.

  3. Incorrect Chain ID: Make sure you have the correct Chain ID for Arbitrum by checking the official documentation or community forums. If you have entered the wrong Chain ID, remove the network and add it again with the correct ID.

  4. Missing Tokens: Add the missing tokens manually by entering the contract address for the token. You can find the contract address on the official Arbitrum documentation or on a token explorer.

  5. Low Balance: Ensure you have enough ETH in your wallet to cover gas fees. You may also need to swap your tokens for ETH on a decentralized exchange in order to have enough for gas.

  6. Gas Limit/Price: Increase the gas limit or gas price in the transaction settings menu of your wallet. You may also want to check the current gas prices on the Arbitrum network and adjust accordingly.

If none of these solutions work, you can try reaching out to the Trust Wallet support team or the official Arbitrum community for further assistance. It's also a good idea to keep your wallet and app up to date with the latest versions to ensure you are using the most current and stable software.

Check out How to add custom network to trust wallet 


In conclusion, adding Arbitrum to Trust Wallet is important because it allows you to easily access and manage your assets on the Arbitrum network, which is becoming increasingly popular for its low transaction fees and fast speeds.

By adding Arbitrum to your Trust Wallet, you can take advantage of the many opportunities offered by this new layer 2 solution, such as participating in decentralized applications, trading on decentralized exchanges, and earning rewards through yield farming.

Remember to follow the instructions carefully and to troubleshoot any issues that may arise. And as always, be sure to keep your wallet and app up to date with the latest versions for the best performance and security.

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