How do I turn off wifi calling on Galaxy S3?

Question

We're going to England with the TravelPass plan.  My wife has an older Galaxy S3, and I can't find how to turn WiFi calling off on this phone.  Cell coverage will be spotty in our location, and I don't want the phone switching to WiFi if we call the US or local numbers and being charged for them.  No problem on my S8 - the option is in the settings, but not on the S3 that I can find.

deloused · Accepted Answer

You’re right, WiFi Calling is not an option on your S3, the S6 and newer Samsung models on Verizon are compatible with the feature