There is no minimum balance required. You can keep it at 0; we won’t charge you for inactivity.
For security reasons, you cannot change the phone number linked to your walletii account. You must close your existing account and open a new one with your new number.
Download the walletii app to the new phone and log in with your existing phone number. We will verify your phone number and passcode. This will automatically sign out your account on the lost phone.