If you want to know the incoming Call or sms in dark .Call Flash Alert app will help you.
when incoming call or incoming sms,the camera flush start blinking
Just check the checkbox
on incoming call or incoming sms or both.
You can share this app to your friend also.
one permission of Bluetooth added
![Enable LED Flash Alerts on Your Samsung Galaxy S4 (Or Other Galaxy Device) [How-To] screenshot 1](https://i.ytimg.com/vi/ldoOOhY2r_g/mqdefault.jpg)
![Get LED Flash Alerts for Calls, Texts, & Battery Percentage on Android [How-To] screenshot 3](https://i.ytimg.com/vi/8Q-biQn8UJ4/mqdefault.jpg)
9Apps 4.9
