I recently purchased two 4G kids smartwatches on Aliexpress and been looking for some cheap sims to go with them. As these watches don't have band 28, the sims will unfortunately need to be on Vodafone network if I want good 4G coverage. I've looked everywhere online for unlimited talk/text + 1GB data @ $10 p/m, like some Optus and Telstra MVNOs have, but haven't had much luck. The only Vodafone MVNO I could find with this plan is kissmobile.com.au, which looks dodgy as. Even 500mb might be okay. Any suggestions?
Ended up getting Lebara sim @ $14.90 pm for 3GB on Vodafone network - https://www.lebara.com.au/mobile-plans/30-day-plans/
depending on what band the watch supports, you don't necessary need Vodafone.
Unless it only uses 4G band 5, you should be able to use others.
Do you want to share the supported band?