what do if my cellphone screen turns black?

[xhainamarquez93]

I dropped my phone after how many weeks my phone turned into violet then I remove the battery again and again then my phone screen turns into black
Cellphone: Samsung Galaxy S3
Model: GT-19300
Battery: Made in China
Cellphone: Made in Vietnam
My grandfather bought it from Saudi

 

[xhainamarquez93]

Please Help me GUys I need your answer right now!. p.s I am Filipino