Your Samsung Galaxy S3 has a LED light indicator locating at the top left corner of the phone. You will see the light occassionally flashes with different color. Here's is a description of what each of the color mean.

  • Red: this indicates your phone is charging.
  • Blue: this indicates your phone is booting up and loading up all the essential system applications.
  • Green: this indicates your phone is fully charged and ready for use.
  • Orange: this indicates you have an event notification.

When you have an event that is due, your phone Galaxy S3 notifies you with the led light indicator. You could change what type of event can send you notifcation, read this article Samsung Galaxy S3: How to Change LED Light Event Notification.

* iOS Development * OS X * Product Review