Earlier quoted context omitted.
Still in the top 5 for most people!
I'd doubt that. Browser, text, whatsapp, fb, messenger. They'd be my top 5. Feedly and casual snapchat would still come before speaking on the phone.
However, if you look at the money and the plans that Telcos are providing, it's pretty evident that phone calls are still very much an important part of having a phone.
Viber, Facebook calling, Whatsapp phone calls, Skype and FaceTime are all extremely popular. Even sending Vines requires sound.