1, the general mobile phone battery is full of electricity, generally green, indicating that green represents safety, on behalf of normal. When the battery is used to half or less than one level, it will show yellow, indicating that yellow represents a warning, warning you that the phone is only half of the battery.
2, when the mobile phone is used to less than 10%, it is generally red, indicating a serious lack of power, there will be a risk of power failure. So the battery power is different, it will show different colors, is normal.