Hello how may I help you? I need help with my phone settings. Okay, what do you need help with? I would like to change the volume to mute. Okay, done! Anything else? I would also like to make my phone vibrate only when called. Alright, are you sure you don't want to set it to vibrate plus ringtone? I am 100% positive. Vibrate only. Okay, done! Can you change it back for me if I change my mind later? Yes, of course. Great. Thank you for your help.