[sgt]

Definitely easier to use than any of the alternatives. An intuitive video calling system should do just that: video (and/or audio), not chat.

Firstly; she has not heard of WhatsApp, it would have to be taught to her that it is a chat app that has additional functionality to allow phone and video calls.

Blank stare.

She does not chat and has no interest in doing that.

The UI of WhatsApp is confusing and unintuitive if you assume you know nearly nothing except that you want to make a video call.

[what_ever]

There is Google Duo that just does video calling.

> Firstly; she has not heard of WhatsApp

I am pretty sure she had not heard of FaceTime as well before you introduced it to her? :)

Disc: Googler.

[sgt]

Yeah, definitely some training is needed for that age group. It will be easier for you and me when we grow to be 100+ years old. She clicks on the green symbol that shows a video camera, maybe that helps to recognize. I am sure Google Duo would have an understandable icon as well, so you raise a good point.