Why does my Galaxy Core Prime keep vibrating?

[AC Question]

Why does my glaxay core prime keep vibrating

I have my phone muted or notifications off and it vibrates for no reason.

 

[Rukbat]

Re: Why does my glaxay core prime keep vibrating

Constantly, or only during notifications?

If it's constant, it's probably water damage. (You don't have to drop the phone into a lake to get water damage. A phone left out in the sun or a hot car for a hours, then brought into an air-conditioned building, or a car left out in sub-freezing temperatures all night, then brought into a warm building, can cause enough condensation to damage the phone.)