Steadily on when an alarm is set.
Flashes when the alarm time set before reaches.
Off when alarm is turned off.
On when the keypad is locked.
Off when the keypad is unlocked.
On when there is new voice message not yet read.
Off when all the voice messages have been read.
On when more digits are existed before the text currently displayed.
Off when no digit is existed before the number currently displayed.
On when more digits are existed after the text currently displayed.
Off when no digit is existed after the number currently displayed.
Full battery power level.
2/3 battery power level.
1/3 battery power level.
Flashes when low battery power level is detected, needs charging.
Animation in cycle, battery is charging.
