Mark1234 I think it is all about volume. I make phone calls when I am on a train, or sitting in the departure/arrival lounge but it is the voice levels that annoy. Doubtless you keep your business to yourself.
Earlier in the thread, I gave the usual reason for people speaking too loudly when using a mobile but some seem to do it for self aggrandisement. If the call is kept discrete, I would not mind but you just know that you are going to land up sitting next to @etc..
