HTC One X User Manual page 29

29 Your first week with your new phone
The notification LED shows a:
§ Solid green light when HTC One X is connected to the power adapter or a
computer and the battery is fully charged.
§ Flashing green light when you have a pending notification.
§ Solid orange light when the battery is being charged.
§ Flashing orange light when the battery level reaches very low.