if im talking to a friend and the conversation is over then there's no need to. if its someone older or who i dont know well i do say bye. or if i suddenly have to hang up for some reason i just say bye and hang up
It depends on the time of day. When I'm talking to someone and if one of use is going to sleep, I'd say, 'nighty-night!' If I'm just talking for a short period of time, I'd say 'bye-bye!'
i say goodbye- i forgot to say it once when my gma called...she called me again and gave me an hour lecture on why its important and polite to say goodbye, now i remember to say goodbye