Ann: Telstra Approves Beam Communication's 4G IoT Router, page-16

5G will take a while to roll out, and even once it has been rolled out the coverage/reliability is unlikely to be as good as 4G (due to using higher frequencies), particularly in rural or remote areas. The following article may be worth reading:

https://www.lifewire.com/5g-vs-4g-4156322

”However, most of these super-high [5G] frequencies work only if there’s a clear, direct line-of-sight between the antenna and the device receiving the signal. What’s more is that some of these high frequencies are easily absorbed by humidity, rain, and other objects, meaning that they don’t travel as far.”