Why does my Android mobile keep vibrating without any reason?

[AC Question]

my android mobile keep vibrating without any reason.

i reformat for many times but the vibrates continues every time i download applications. i don't know what to do. HELP!

 

[belodion]

Re: my android mobile keep vibrating without any reason.

Welcome to AC.

Perhaps the battery is bad?
Also, could there be water damage?

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