Yes, you can receive SMS Security codes while overseas if your handset and SIM card allow global roaming and the country you are in operates via a compatible network. Please check with your mobile phone service provider before you head overseas.
We recommend that you set up your regular payees and billers as Contacts you can authenticate before leaving home, using two-factor authentication. Then you can make payments to them any time you like without requiring further SMS authentication.
If you need to phone us while you are overseas, call +61 3 6233 0679 for Phone Banking or Customer Care. Our Customer Care team is available between 8:00am and 6:00pm Monday to Friday and 9:00am to 1:00pm on Saturdays, except on public holidays.