Why are there different colored lights flashing at the top of my S6?

[AC Question]

Sometimes there is a blue light flashing but I have also seen a green are they alerts for a notification?

 

[Brando224]

Yes. For Samsung Galaxy s5 (what I have) blue means you have a missed call/text. Not sure what green means :/.

 

[Brando224]

It is used for alerting you when the screen is off

 

[gooner63]

Also when battery low or charging a red light will show then when charged it turns green,also if you use whatsapp you can choose a different coloured light for different contacts