What do the different lights on the back of my Dial mean?

Circle light indicator:
– When loading the cartridge, the circle light will flash white once the cartridge has made a successful connection.
– While inhaling, the circle light will flash through a cycle of colors. If the light is flashing white, check the cartridge connection.
– When the battery is low on power, the light will flash red.
– While charging, the light will flash according to the level of charge, once fully charged, the light will turn off.