What do lights mean?

 What is means Light Indicator
Normal Flashing green LED every 2 minutes (indicates normal behavior and above 20% battery)
Low Battery Flashing red LED every 30 seconds (indicates that the battery is less than 20% and will remain flashing red even while cradled until the 20% threshold is met.). When device is critically low, the LED will turn solid red.
Charging Device will blink red until it is above the 20% threshold. Above 20% it will flash green and turn solid green when fully charged.
Connectivity issues Flashing amber LED every 1 minute (indicateds there is an issue with the network connectivity).
Over the air update All lights on (R, G, A)