How to Use Optus SMS Menu Functions: (9999 Options)
Need to find out your account balance, bill due date or request a payment extension? You can do this and more using the Optus SMS menu. This service is available to Optus Mobile Phone and Mobile Broadband customers, 24/7.
All text messages to and from the SMS Menu are completely free when used in Australia. Roaming rates apply for Postpaid customers overseas.
It's super quick and works with any Optus Mobile Phone or Mobile Broadband device / tablet that can send text messages.
If you'd like to see what other self serve options are available, check out the My Optus app.