Can I use my iPhone to call another iPhone that s in another country but has a US number?

My mom is going to a different country for a week and I want to call her, I have an iPhone, she does too, same plan, both us numbers, will I get charged for calling her when she goes to a different country

It depends on the cell phone provider you each have, like Verizon or AT&T or Sprint. Contact the provider and ask them about international calls from the US.

If she can get onto a free Wi-Fi network then use Facetime to avoid roaming calling fees.

Hi yes this call will be so expensive as it includes different data carriers, and they charge lot for this service.

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