people taking calls on public transport is a pet peeve of mine.I hate taking calls in public, partly because some of them (such as hospital appointment booking) involve giving out such personal information. I don't understand why some people do this. It's bad enough when my dad calls me. (He works outside and usually wants to know if I'm home so he can have a wee!)
it’s a shared, communal, contained space. It’s selfish and inconsiderate to dominate that space, whether it’s with your music, loud talking or phone calls. I automatically assume you are trash if you have loud conversations on public transport.