Making phone calls using VoLTE
Voice over LTE (VoLTE) lets you make phone calls over the 4G (LTE) network. Your mobile device will use 4G to make and receive calls in areas where 4G (LTE) is available.
When the Optus 3G network closes, VoLTE will be required to make or receive phone calls on the Optus mobile network.
If you have a 3G mobile device, you must upgrade to a 4G or 5G mobile device that is VoLTE capable and compatible before September 2024.
If you have a 4G compatible mobile device that doesn’t support VoLTE, from September 2024 it will not be able to make or receive voice calls, including 000 emergency calls on the Optus network. It will still be able to use mobile data.
Make sure your 4G device has VoLTE turned on
Most devices are already VoLTE enabled, but some older devices require you to enable VoLTE.
Check that your 4G device’s VoLTE setting is turned on so you can keep making voice calls after the 3G network closes.
Check your Apple iPhone’s VoLTE settings
- Go to your phone’s Settings and select Mobile or Mobile Data.
- Select Mobile Data Options > Voice & Data.
- If you see 4G with a VoLTE setting, make sure it’s turned on.
- If you see both 4G and 5G, you don’t need to do anything – VoLTE is already enabled.
Check other devices' VoLTE settings
Refer to your user manual to check that VoLTE is enabled, as instructions may vary for different device models and types.