I accidentally turned the light on on the back of iPhone 4- how do I shut it off?

I accidentally turned the light on on the back of iPhone 4- how do I shut it off?

That "light" is the flash for the camera that is built into the phone.

You must have downloaded a flashlight app that can turn the light on to use as a flashlight.

Find the app, open it, turn off the "flashlight"

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