Notify you with the Camera Flashlight during a incoming call.

If you want your LED flash light to indicate you about an incoming call, then you are in luck. Say thanks to Faiyyaz, a member of XDA Developers, who has developed a homebrew app, Flash Blink which can be used as a torch and indicator to notify you with the Camera Flashlight during a incoming call.Flash Blink is quite simple and is created on user’s demand.
As it is a homebrew app so it won’t be available on Google Play. Flash Blink is tested on Samsung Galaxy S II and is found to be working really well, it is compatible with Android 4.0 Ice Cream Sandwich. The app is still a basic release but many more features may be added to it in future. So if you want to get it head over the source link below or if you have any questions or queries regarding the app, email your problem to the developer.
Download App
Source: XDA Developers