S.O.S. is a flashlight and an emergency beacon! This multi-function app is perfect for illuminating a room or finding your keys in the dark. You can also wave your phone around at a concert or party with the built-in strobe light function or in the case of an emergency, just whip out your phone and signal S.O.S. The S.O.S. function behaves like the strobe except it blinks in time with the international S.O.S. code.