Yeah, I also like it for the same reason. I hate holding a cell phone to my ear not knowing if it has connected or not or if the person has picked up but it's bad reception. The vibrate is a a convenient feature for me so I do't hold it to my ear until it vibrates. But uhm, i think it's like the phone number entry vibration, can't be turned off through user settings. I guess this post wasn't helpful haha.