*update* Just recently my iphone 4s will no longer vibrate on silent. When I toggle the switch the phone vibrates. I went into settings/sound/ and both vibrate on silent and vibrate on ring are turned on. But when I recieve a call and the phone is on silent no vibrate. I downloaded ibrate and when i push the center screen it vibrates in pulses. and on the screen it says put down all three fingers to vibrate all the time in which I do and no vibration at all with three fingers. Does the iphone 4s have more than one vibrating motor?
Thanks everyone.