You add a network in Phantom Wallet by opening Settings → Manage Networks → toggling the network on. Phantom activates Ethereum or Polygon instantly, without needing any manual RPC input.
Phantom uses one seed phrase to derive addresses across every supported chain, so enabling a network never requires a separate wallet.
| Network | Role | Avg Fee |
|---|---|---|
| Solana | High-speed L1 | <$0.01 |
| Ethereum | Smart contract L1 | $1–$50+ |
| Polygon | Scaling L2 | <$0.01 |
Adding a network means enabling blockchain interaction inside the wallet interface — the blockchain provides the assets and transactions, and the wallet interface displays network-specific balances.
Phantom supports Solana, Ethereum, and Polygon because they represent high-usage ecosystems with different strengths — Solana optimizes throughput, Ethereum executes complex smart contracts, and Polygon scales Ethereum transactions.
You manage networks inside the settings layer of the wallet UI.
You enable Ethereum or Polygon by switching the network toggle to “on”.
Launch the extension or mobile app.
Open the settings menu from the dashboard.
This lists every available blockchain toggle.
Switch the toggle to “enabled”.
Phantom connects to the RPC endpoint and updates balances, typically in under 2 seconds.
Phantom Wallet restricts custom RPC input — it uses predefined, trusted RPC endpoints instead, which reduces misconfiguration risk.
| Wallet | Custom RPC Support |
|---|---|
| Phantom | Limited |
| MetaMask | Full |
Yes — each network uses a different address format, even though a single private key can derive all of them.
| Network | Encoding | Prefix | Length |
|---|---|---|---|
| Solana | Base58 | None | 32–44 |
| Ethereum | Hex | 0x | 42 |
| Polygon | Hex | 0x | 42 |
Phantom uses one seed phrase for all networks — the seed phrase generates a master private key, which derives per-chain addresses. Ethereum uses derivation path m/44’/60’/0’/0, while Solana uses m/44’/501’/0’/0.
Critical FactLoss of the seed phrase removes access to all assets across every chain — there is no chain-by-chain backup.
| Cause | Fix |
|---|---|
| Toggle state disabled | Re-enable the network |
| Wallet version outdated | Update wallet version |
| RPC endpoint fails | Check internet connection |
| Feature rollout restricted | Restart wallet session |
Enabling a network updates wallet state, UI, and blockchain connectivity all at once — token balances load, the gas fee module activates, and the dApp browser starts supporting that network. For example, enabling Ethereum unlocks Uniswap access, while enabling Polygon unlocks low-fee swaps.
Multi-chain support lets you manage assets across ecosystems from a single interface instead of juggling multiple wallets. Web3 UX research from 2024 suggests multi-chain wallets can reduce wallet-switching friction by over 60% in user flows.
Open Settings, select Manage Networks, and toggle the network — such as Ethereum or Polygon — to “on”. No RPC input is needed.
No, Phantom restricts custom RPC entry and instead relies on its own predefined, trusted endpoints for supported networks.
You’re likely viewing the wrong network for that asset. Switch to the correct chain and the balance should reappear.
Yes. A single seed phrase derives separate addresses for Solana, Ethereum, and Polygon using different derivation paths.
Update the wallet to the latest version, restart your session, check your internet connection, and re-enable the toggle.
