[skysurfer]

At arrival in Brisbane I bought a Vodafone SIM card for $30 which worked flawlessly, it included 45GB of data as well.
But suddenly the 4G data stopped, despite being on. I went to a local phone shop and they told me that in this area (Bellingen east of Coffs Harbor) Vodafone has no coverage and they roam on Telstra.

So when I switched on Data roaming (which was switched off) it worked again.
Is this indeed the case ?