If someone videos you on Skype or WhatsApp, do you immediately see the picture or only when you click on it?

Or does one see the picture of the other one only if one is also on Videocall? And does it matter whether it's a smartphone or a laptop?

Yes, when one is called one sees ones opposite only, if one has accepted. The same applies the other way round

Okay, and if my counterpart indeed accepts but not by video, then does not see my video picture or?