I've recently unlocked my J3 2017 it was on Vodafone, is there anyway of setting up WiFi calls and text with three?
You would probably need to speak to 3 Customer services and ask them to possible send an OTA to provision the phone for that service if they support your model of phone @Wanderer88
Check out their support pages.
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.The advice I offer is my own and does not represent Samsung’s position. I'm here to help. " This is the way. "