MetaMask mobile, just like its desktop extension counterpart, allows users to access Ethereum and compatible blockchain networks through configurable settings called Remote Procedure Call (RPC) endpoints. These networks are accessible by default to different degrees, but many users want to add custom blockchain networks such as Binance Smart Chain or Arbitrum for DeFi, NFTs, or faster transaction options.
In my experience, the ability to add networks manually enables a much more versatile crypto wallet experience, especially for users holding assets across multiple chains. This guide explains how you can add custom RPCs in MetaMask Mobile — and not just any RPC, but major Layer 2s and alternative blockchains that expand your reach beyond Ethereum.
You might wonder: why bother adding networks manually when MetaMask already supports Ethereum Mainnet? Here’s the deal:
From hands-on testing, I’ve found that custom RPC setups can sometimes cause confusion for new users, but once set up, they deliver clear benefits.
Adding a custom network in MetaMask Mobile follows a similar structure regardless of the blockchain. Here’s the general process:
Note: Each blockchain network requires specific RPC parameters. Incorrect entries can lead to connection issues or wrong transaction data, so double-checking details from the official sources (or trusted community repositories) is critical.
For a broader overview on network setup, check the custom-rpc-network-settings page.
Let’s get practical. Below are specific steps for adding some of the most demanded networks on MetaMask Mobile.
Binance Smart Chain (BSC) became a popular alternative for affordable and fast transactions. Here’s what you’ll need to input when adding BSC:
| Field | Value |
|---|---|
| Network Name | Binance Smart Chain |
| RPC URL | https://bsc-dataseed.binance.org |
| Chain ID | 56 |
| Currency Symbol | BNB |
| Block Explorer URL | https://bscscan.com |
After you input these, save the network. From personal use, switching to BSC reduces fees significantly versus Ethereum.
Avalanche offers high throughput and sub-second finality. To add Avalanche Mainnet C-Chain:
| Field | Value |
|---|---|
| Network Name | Avalanche Network |
| RPC URL | https://api.avax.network/ext/bc/C/rpc |
| Chain ID | 43114 |
| Currency Symbol | AVAX |
| Block Explorer URL | https://snowtrace.io |
This setup is especially useful for DeFi protocols built on Avalanche.
Arbitrum is a Layer 2 scaling solution with low gas fees:
| Field | Value |
|---|---|
| Network Name | Arbitrum One |
| RPC URL | https://arb1.arbitrum.io/rpc |
| Chain ID | 42161 |
| Currency Symbol | ETH |
| Block Explorer URL | https://arbiscan.io |
Arbitrum compatibility means faster and cheaper Ethereum transactions.
Polygon has been a user favorite for scalable smart contracts:
| Field | Value |
|---|---|
| Network Name | Polygon Mainnet |
| RPC URL | https://rpc-mainnet.matic.network |
| Chain ID | 137 |
| Currency Symbol | MATIC |
| Block Explorer URL | https://polygonscan.com |
Once you add Polygon, you can interact with popular DeFi protocols at reduced cost.
Fantom and Cronos are also common to add:
Fantom:
Cronos:
The process remains the same: tap “Add Network” and fill in these fields.
I’ve noticed a lot of beginners overlook this, but connecting to a custom RPC endpoint means you’re trusting that node provides accurate, unmanipulated blockchain data. Malicious or unreliable RPC providers can feed fake transaction states or censor your requests.
To mitigate risk:
This caution applies especially when managing hardware wallets through MetaMask or doing multi-signature setups — errors here can lead to lost funds.
Users sometimes experience:
If you imported accounts from a hardware wallet, verify in hardware-wallets-with-metamask that network support aligns.
Adding custom networks to MetaMask Mobile empowers you with broader DeFi access, lower fees, and more transaction options — but it requires careful setup and security awareness. I’ve personally found that while some RPC settings can feel daunting at first, once added, they streamline daily usage through MetaMask.
Curious to expand further? Check out guides on connecting hardware wallets, managing tokens, and multi-signature configurations to boost your self-custody security. In crypto, knowledge is power, and customizing your MetaMask mobile setup is a solid step in gaining control.
For detailed setup instructions and troubleshooting tips, browse related pages like add-avalanche-to-metamask, add-bsc-to-metamask, and add-polygon-to-metamask. And remember: every added network is an additional doorway in your crypto journey — choose carefully and keep your private keys offline and safe.