usually both but at least sound so i can hear the pm chimes in case a event pops up. I think admin notifications should have there own chime so you know there's an event. I've missed events because the notification was lost in a sea of gc spam. also i play on an Iphone 5 and every time i accidently hit the microphone button it ****s up the sound and i have to exit out and reset the app to fix it. anybody else have this issue?