Why my Nexus 4 keeps blinking the notification LED? The notification LED in my device is always blinking. There's nothing in the notification area and it keeps blinking. 
Sometimes its a dark blue / violet and sometimes it changes to a white light.

I Don't understand if this is an expected or unexpected behavior. I presume the notification light should be related to the notification area and should stop when it is cleaned.

I read here LED wont turn off that I should try reseting it. I'll try it if works I post here again.
If your device is no more in an area where it can reach GSM network, the notification LED will blink (in white if you installed LightFlow).

Still with LightFlow installed, the dark blie/violet blinking is the notification of a new SMS.