I have a galaxy s6 , there a blue light flashing, what is that for?

[AC Question]

My phone wont turn on and there's a blue light flashing at the top,why is that?

 

[chanchan05]

You have a notification.

 

[Rukbat]

Dim and bright? It's loading files. On and off? You have at least one email. (Unless you're running an app that changes the LED.)