When I turn my Samsung Galaxy S3 Mini on screen it comes on for 2 seconds then it goes off, why is it doing this?

[AC Question]

when i turn my samsung galaxy s3 mini on screen comes on for 2 seconds then it goes

black and phone still on because the 3 bottom buttons light up please help

 

[belodion]

Re: when i turn my samsung galaxy s3 mini on screen comes on for 2 seconds then it goes

Have you checked that the battery is not failing?

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