Why has my iphone 4s screen gone black?

Anyone know why my iphone 4s screen has gone black randomly.tryed resoring it, tryed pressing the home button and power, still nothing… I'm still receving texts and everything even tho i can't see the screen. Please help x

I dropped it 4 days ago and it seemed fine just a little crack now the screen has gone black, i don't wanna take it apart but i have no insurance…

You have too many aps taking up space on your phone that sometimes it goes black when it gets overworked.

It means your phone is crashing you have many apps running

Basically you're using up too much ram which means lots of apps are running, when you get it back, double press the button, a tray will popup, hold one of the apps and they will start wiggling, click the red cross next to each of them to close them.

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