This is the most common question for all mobile users..
This is about how your mobile phone vibrater vibrates when you put mobile in vibrating mode…mobile-vibrator
Mobile phone has a stepper motor with an uneven head(i.e unbalanced load in shaft),when you put the mobile in vibration mode ,it gets the signal from mobile processor and energy management IC.In general,motor with unbalanced load makes vibration,so the uneven head in the vibrator is the cause for vibration.
The picture in this article is the most commonly used vibrator in mobile phones.
