phone vibrate

[anthonycr]

My phone will only vibrate in silent mode for notifications and phonecalls. I realize that you can change it to vibrate always or only when not in silent mode... but when I switch this setting it wont vibrate except for "only in silent mode." I keep the ringer/notification ringtone on silent... what is the problem. My phone is NOT rooted but I don't think this is the problem. My friend just got the optimua and the same thing is happening...only vibrates in silent mode