Sometimes the LED light at the bottom of the display changes color to green, orange or red. What do these codes mean?
Red color means you are low on battery or have a serious system warning e.g one of the internal components of the phone is not functioning properly.
Orange color means you are charging your device and the battery has moved from being low to half full.
Green color means your battery has been fully charged. It also means you have a missed call, new message or facebook/twitter/whatsapp update you need to check out.