If your ZenFone is charging, the LED at the top will light up in red or orange.
When charging is completed, the LED turns steady green. Depending on the model, it may blink red when the remaining battery charge becomes low.
For the LED to function, it must be set to enable the switch next to "Settings" > "Display" > "LED indicator".
* Depending on the model, LED color status may be different from the above.
