Has it got wet or something? Is it a flashlight app?

 

Thats strange. I dont have samsung firmware on my phone so i cant remember if it has its own inbuilt feature to use the camera flash as a flashlight?
Is it still under warranty? Maybe its a hardware problem but maybe its a software problem you could fix yourself if youre up for reflashing it (exactly what samsung would probably try first) :thumbup:

 

It does...it's a widget called "Assistive Light"...but it would say at the top in the notification bar that Assistive Light is on...if you pull that down you should see a light bulb, and you can tap on it to turn it off...

 

You can also tap the Assistive Light widget to turn it off.