Did you ever know that your iPhone can aware you by blinking its LED Flashlight when you receive an incoming call, message or notification. This may be useful for those who usually keep their iPhone on silent mode or mute.
The steps are easy as Apple iPhone has an inbuilt feature that you can use to blink your LED flashlight. I tried this on iPhone 4, iPhone 4S and iPhone 5 and seems to work exactly as it should be. And must also work on the newer versions of Apple iPhones.