International calls while in Greece

Going to Greece this summer with US friends with US phones.
I have GSM type SIM card in a SAMSUNG SM-J320A phone. Republic Wireless.
AsI read the Republic info, I can make and receive calls in Europe, via wi-fi only, and also only to US phone numbers, which is what my companions will be traveling with. Is this correct.
Thank you for helping.
Alan

Hi @alanb.ihrnb7 Welcome to the community! Yes, you’re right. To be clear, while connected to wifi that is not blocking calling and that provides performance sufficient to support calling you’ll be able to make/receive calls/texts to US and Canadian numbers only.

Your companions would have to have a cellular plan that included connectivity in Greece (with their US numbers)

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