Electrum Server

On the main menu, go to the three-dot menu in the top right corner, select Network, then select Electrum Server:

• Enabling offline mode will disconnect your wallet from the Bitcoin network. You can still receive funds, but your balance and transaction history will not update, nor will you be able to send funds.

• Connect to your own node by entering its IP address and its Port. If you don't, your wallet will automatically connect to the BlueWallet servers.