My T's personal cell Phone is usually next to her laptop on her desk. We're sitting a few metres away from the desk. It has gone off a few times and I have heard a notification of some message several times during session. It is on silent mode, but you do hear it vibrating. It's kind of annoying, it makes me think if she wondering who it is. I'm sitting there and I hear it vibrating, I'm trying to ignore it and keep talking about what I was talking about. But it is a bit disturbing.
And often the first thing she does after my session is to look at her Phone if she has notifications. -> We stand up, say goodbye while walking to the door, she goes to sit behind her desk, I open the door to leave and I see that the first thing she does is to look at her Phone.
I put my Phone on ''airplane mode'' while I'm in sessions or in other appointments.
At my Pdoc I've seen his Phone once, it was on his desk. I've never heard his Phone.
The cell Phone is way too present in our daily life.