It wasn't on and the hard reset didn't work either.
Update : called BB and they exchanged for brand new device.
Sent from my HTC One using Android Central Forums
I think i have the same problem ! Happened last night ramdomly ! It just stopped vibrating , i have it on , when i type it vibrates once when i press the first key then it stops. I had someone calling me on while i was on vibrate mode and nothing happened , it did not vibrate. Is it possible to be brooken ? ( sorry for my bad english )