New Samsung handsets with edge screen, has the edge notifications, where a light blinks in the contour of the screen when notifications arrive. This function does not work correctly with the screen erased in some applications, for example the Whats App, where upon reaching the notification pops up with the message that was received. With Edge Lighting Notification, this does not happen, even with the screen off, the lights around it flashes when a notification of an application arrives.- Follow the instructions correctly for the application to work. Inside app has a tutorial video.*********After follow instruction, restart your phone*********- Now you can chose colors for each app, or set random colors.- Added a few icons of most used applications, if you have some that do not appear correctly, please contact requesting to insert.S7Edge Users - to work correctly, must have android 7 or superior, and samsung edge screen with version superior 3.0.Some notifications doesnt appear the light with battery in power saving mode. To work, set this app with a exception in battery settings.Thank you.