The Fine Print:
4G: is available in selected areas. Check coverage above to see where you can get it on your 4G device.
VoLTE and WiFi Calling available from late 2017 for eligible Postpaid customers. See the community articles for VoLTE and WiFi Calling for more information.
Coverage: With 3G devices, you can access the Optus 3G (UMTS 2100 MHz / 900 MHz) network. With 4G devices and a compatible plan, you can access the Optus 3G network plus some or all of our 4G Plus network. Our 4G Plus network uses multiple frequencies (LTE 700 / 1800 / 2100 / 2300 / 2600 MHz) to provide coverage. Coverage availability will vary depending on your device and location. Check coverage above based on your address and device.
Compatibility: If you bring your own device, make sure it’s not locked to other networks and is compatible with the Optus network: 3G (UMTS 900MHz/2100MHz) and 4G Plus (FDD LTE 700 / 1800 / 2100 / 2600 /TD LTE 2300 MHz). Coverage availability will vary depending on your device compatibility and location. Check coverage above based on your address and device.