I have never used a mobile phone to make a telephone call.
Never. Ever. No exceptions.
I do not subscribe to any mobile telephone service provider, and I never have. Not years ago. Not now. Never.
True war story:
It must have been circa 1982 or 1983 . . . but I’m really not certain. It was early where mobile communications are concerned. My boss, one of our Division VPs, ordered me to attend a seminar on cellular communications. For this I had to travel to NYC. It was a large group of people at either the Harvard Club or the Princeton Club, I’m not sure now which. We were lectured by the Yankee Group, out of Boston, regarding every aspect of the (then new) cellular communications phenomenon.
It was all new to me. I sat there, listened, and learned. Reported thereafter, back to my boss.
Throughout I was unimpressed by the entire thing. I found the idea of carrying a telephone around with me, on my person, highly intrusive and far too potentially disrespectful of my privacy . . . something I value highly.
It is nearly forty years later now, and much has changed and evolved in the mobile telephone world. But my opinion regarding the basic concept remains unchanged. I want nothing whatsoever to do with the damn things.