When making calls, you are not limited to your carrier’s calling plans (and expensive out-of-country charges). Even global calls can work with these calling apps.

Two things to keep in mind: These apps still use data, so if you’re not on an unlimited network (like Wi-Fi), you could still use up your data plan. And while these apps are free, you’ll want to read the details to see if some calls will still incur charges.

The name FaceTime has become so ubiquitous that it has replaced the word for calling. Yet it is a phone call like you would make if you were calling someone the "old fashioned" way.

Starting with iOS 15, Android and Windows users can be added to FaceTime calls, but they can't initiate FaceTime calls themselves.