IPhone 7 So I'm currently in Australia with an English sim. When I use iMessage it goes green. My overseas is outrageous. Sim - 02 any

IPhone 7 So I'm currently in Australia with an English sim. When I use iMessage it goes green. My overseas is outrageous. Sim - 02 any

Go ALDI Store and pay $5.00 for an Australia CIM

Should check over your roaming settings (though I wouldn't be using that in the 1st place) to see if it is set up properly.

I'd also limit iMessage use to Wi-Fi if at all possible.

It sounds like either iMessage is not setup correctly or you don't have an international data plan. If you don't want to pay the international fees put your phone in airplane mode then turn on Wi-Fi.