Import an Account using mnemonic seed (secret recovery phrase)
In a newly installed SubWallet
Step 1: During installation setup, click Import account from pre-existing seed.
Step 2: Enter your mnemonic seed (secret recovery phrase) and hit Next Step. Then enter your new password. Press Add the account with the supplied seed. Your Polkadot wallet is successfully imported!
In an existing SubWallet
Open SubWallet extension and click on the round favicon icon in the top right corner. Then hit Import account from seed phrase and repeat the steps. This instruction applies to both Polkadot native wallet (Substrate account) and Polkadot EVM wallet (EVM account).