on 15-01-2025 02:12
on 15-01-2025 06:52
See if enabling Volte or 4G calling on your handset helps, @Enquirer_1 - lots of things are changing very rapidly in the Australian Telco arena, thanks to their government's policy on 3G removal...
Try manually searching for a network, and select any Vodafone network, or other network even if it says "Forbidden Network" - you may get one that you can use, but manually searching for networks is going to be a feature of roaming in Oz until things settle.
Good luck!