My mobile is usually in my bag, or somewhere else in the house,I loathe when people come to visit, and immediately take out their phone, one neigbour and her Husband called around last Summer (always armed with their mobile) then suddenly the Husbands phone rang and he sat there talking for ages, his wife sat googling something we had asked about, we sat like two book ends wondering why they came at all, what is this behaviour all about, people in their sixties who dont know how to talk any more.
A few weeks ago we had six people around for a "chat" I thought, when suddenly two of the females got our their phones, I couldnt resist saying " Oh I see we have two teenagers in our midst" it did the trick, if they are impolite, I felt I could be too!