iPhone OS 4.0 To Offer A Built-in Flashlight Mode?

Every now and then a little gem related to the iPhone OS 4 seems to surface, and now a user has discovered that if you hit the power/sleep button three times in a row while the screen is locked, the iPhone seems to go into a sort of flashlight mode, showing a bright white screen. While it might seem mundane at first, the many folks who use their cell phones as a flash light and iPhone owners who install flashlight applications should be quite happy to see this. Check out a video of it being demoed after the jump.