We start by a question: Which is better? Type a message or do a call?
I think, to talk to someone, a thing without importance, it's better do it by WhatsApp, because the person, can response when he can, and let's be honest, it's free. And it's better, you can send images and videos of this moment.
On the other hand, if the topic is very important, it should be better do a call. Because the person, have our attention and he will response at the moment. Moreover, the old persons, don't know about technologies like us, and they prefer do phone calls.
To sum up, I think it's better use WhatsApp, because, if you want, you can do videocall. ;)
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