Definitely not. Even if I have the 'phone with me, it would most likely be switched off.
Certainly would be off in any formal or informal social, professional or entertainments situation, in shops or places where they have to be turned off by order; and obviously when I am driving. Also overnight unless and only if, I am using its alarm function.
I belong to a club whose premises are also used by guest groups. One evening I was the only member present alongside some ten or twelve visitors. Over maybe two hours they barely said a word to each other, let alone try to talk to me. Of them, one was busy on a lap-top - apparently work or study. A couple were engrossed in something together, a game or video I suppose, on another lap-top. The rest were all lost, sitting next to each other but isolating themselves by portable ''phone.
Perhaps they were conversing among themselves but had lost the ability to do so other than by [txt msg smiley-face] tappity-tappity-scroll-tappity-tap. And here come RSI and arthrosed thumbs.
What a sad way to be.