I've just got iPhone by apple online store, I found that my iPhone had a problem on the vibration system, I don't know it's about bugs on iso6 or iPhone vibrator problem. It vibrates too long and will stop when the ring stop, it's quite long shaking, it's not like vibrating in tempo. I compared to iPhone's friend, it vibrates normally in tempo of the pattern we selected. I tried to change the vibration pattern, I choose rapid, SOS or heartbeat, the result is not different. So I called to the apple center and he advised me to restore the iPhone and see the vibration return to normal, but its still same. I'm very worried abt it. Do I have to return the product or ignore it? It takes too long time to got the new iPhone cos my country don't have the apple store branches.