3 Green Circles

This puzzle screen shows the three green circles and a number of moving green dots as below. (dots may also be red)

Solution: The height of the moving dots on the screen represent the charge level of the battery.

The bottom green circle on the screen will light when you are one this screen while the battery level is very low. Around 5 or10%. The moving dots will have gone red and may have stopped moving.

The middle light will activate when you plug in the phone to charge.

The top light will activate when the phone reaches 100% charged.

You do not need to do these in any order.