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Documentation Index

Fetch the complete documentation index at: https://docs.phantom.com/llms.txt

Use this file to discover all available pages before exploring further.

Testnet mode allows you to connect to blockchain test networks for development and testing purposes. When enabled, Phantom will display testnet balances and allow transactions on supported test networks.

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Enable testnet mode

To access test networks in Phantom, go to Settings → Developer Settings → Testnet Mode. Testnet mode toggle in Developer Settings

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Supported test networks

When testnet mode is enabled, you can connect to the following networks:
BlockchainTest networks
SolanaDevnet, Testnet
EthereumSepolia, Goerli
BaseBase Sepolia
PolygonPolygon Amoy

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Get test tokens

To test transactions, you’ll need testnet tokens:

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Testing with Phantom Connect

When using Phantom Connect SDKs, testnet mode works automatically. Users with testnet mode enabled in their Phantom wallet will see testnet balances and can sign testnet transactions.
For local development, you can also use localhost or 127.0.0.1 to test your integration before deploying to a production URL.