If you prefer to use Phantom only as a Solana wallet, you can hide all other networks. In Solana-only mode, Phantom won't connect to apps on other networks or display cross-chain assets. You also won't be able to access perp trading, even if it's normally available to you, because it requires Ethereum to be active.
To show only the Solana network, follow these steps:
- Select your profile avatar in the upper left.
- Go to Settings → Active Networks.
- Turn off all networks except Solana.
You'll now see only Solana accounts and assets in your wallet.