usual after being charged properly, replace the battery with a new one of the same type.
•Using data services increases the power consumption of the phone and will therefore reduce the length of time that the phone can be used between battery charges.
•The time required to fully charge the battery depends on the ambient temperature and the age of the battery.
•When the battery power is low, the phone will alert you and display a message. When the battery power is almost exhausted, your phone will power off automatically.
2.3 Power Saving Tips
The longevity of battery power depends on the network to which you connect, and how you use your mobile phone.
Try the following to conserve battery power:
•When your mobile phone is not in use, turn off the screen backlight.
•Reduce the time it takes for your screen backlight to turn off when your phone is idle.
•Lower the screen brightness.
•Turn off Bluetooth when you are not using it. Only make your phone visible to other Bluetooth devices when you need to establish a Bluetooth connection.
•Turn off
•Turn off your phone's GPS receiver when you are not using it.
•Lower the volume.
•Close
•Turn off the data service.
2.4 Power On or Off Your Mobile Phone
2.4.1 Powering Your Mobile Phone On
Press and hold 
. If you have protected your mobile phone with a personal identification number (PIN), enter it before using the mobile phone.
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