I have the Galaxy S4 and would like to be able to ensure that, when on silent/vibrate mode, the phone makes absolutely no noise. I haven't been able to find a way to prevent the alarm from making noise when going off in silent mode, and though I could set the alarm type to vibrate, I'm concerned that if the alarm can go off in silent mode, other things can make noise as well.
Is there a way to ensure the phone makes no noise? Is it really only the alarm that makes noise in silent mode?