I agree- this phone has a pretty weak vibration alert. When it first came out people complained that their 920 would vibrate too strongly, so it seems Nokia softened that with the Amber update. I don't know if it's even softer with Black but I know that I routinely miss calls if the phone is vibrating in my coat pocket. It's really frustrating. I'll be listening to music, have the phone set to vibrate then take it out and see a bunch of missed calls. If they can't provide a decent vibrate alert, then let me enable headphone-only ringing.