How does your phone vibrate?

Question

what makes it do that?

Answer 1

If you have a cell phone or a pager, then you know that having it ring in the middle of a movie or performance is enough to get you killed in some cities. Vibrating devices that quietly replace the ringer are therefore life-saving devices that are an important part of urban survival!
There is, however, a device that takes vibration to high-tech extremes. Any parent whose child owns a Tickle-Me-Elmo doll has experienced this technology. Elmo has a vibration system (designed to simulate body-shaking laughter) that is powerful enough to cause many children to drop the toy. The vibration system inside a pager works exactly the same way on a smaller scale,
Inside the control unit is a small DC motor which drives a gear there is a small weight. This weight is about the size of a stack of 5 U.S. nickels, and it is mounted off-center on the gear. When the motor spins the gear/weight combination (at 100 to 150 RPM), the off-center mounting causes a strong vibration. Inside a cell phone or pager there is the same sort of mechanism in a much smaller version.

Answer 2

There is a tiny little motor that has an off center weight at the end of the shaft. When the phone is set to vibrate, instead of setting of the speaker it sends the signal to the motor. As it spins, since the weight is off center it doesn't spin smoothly and shakes the phone. That the vibration you feel. Hope this helps.

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"Fact becomes history, history becomes legend, legend becomes myth and eventually it all comes back to bite us in the butt."

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Answer 3

Hi There,

I wondered the same thing when I started working for a mobile network.

A flywheel motor with a weight is attached to one side. When the motor turns, the weight throws it off balance and creates a wobble. That wobble causes the whole device to vibrate.

I believe they can only do this with Lithium batteries.

Hope this helps

Answer 4

It's a tiny biologically engineered microscopic hamster that goes "HUMMMMM"... when it doesn't vibrate anymore, the hamster is dead.