My iPhone 5 don't vibrate when receiving a PING. I have tried changing my settings notifications and all. Nothing seems to work for me unless but my phone completely on vibrating mode. All I would see when somebody PINGs me is the PING with a red exclamation mark in the chat convo that's it. But it should work when my ringer is on loud but it doesn't work. I am using the latest iOS update 7.0.3 and the latest BBM iOS update 188.8.131.52 that came out yesterday. Any suggestions I can try to get my PING feature working properly?