I activated an Aussie Broadband Mobile service a couple of days ago, obtained via the now-expired https://www.ozbargain.com.au/node/738719 deal. I got 4G as expected, as well as VoLTE and VoWiFi - all good. (They use Optus, so not so good in my case, but hey….. FREE!)
A little while ago I noticed that I'm now getting 5G, which was unexpected. I went to the ABB site to see if there was any explanation, and noticed that the First Month Free (new 4G mobile services only) offer is back, until the end of January. Enjoy!
(I'm still none the wiser as to why I'm getting 5G.)
This is my in-between plan while waiting for the JB Hi-Fi gift card deal again.