The green dot on the front of the iPhone signifies that the camera is in use. If you open up the camera application, the green dot will light up to indicate that the camera is ready to perform.

If you notice a green, yellow or orange light in the upper-right corner of your iPhone screen, you might wonder what they indicate. Those little lights are, in fact, trying to tell you something ...

What Orange, Green or Yellow Indicators on iPhone Mean According to Apple , an orange dot, an orange square, or a green dot shows that an app is using the microphone or camera.