Charge the battery
Before using the phone for the first time, you must charge the battery.
1.Open the cover to the multifunction jack on the side of the phone.
2.Plug the small end of the travel adapter into the multifunction jack.
With the triangle mark facing up
Improperly connecting the travel adapter can cause serious damage to the phone. Any damages by misuse are not covered by the warranty.
3.Plug the large end of the travel adapter into a power outlet.
4.When the battery is fully charged (the 
icon is no longer moving), unplug the travel adapter from the power outlet.
5.Unplug the travel adapter from the phone.
6.Close the cover to the multifunction jack.
About the low battery indicator
When your battery is low, the phone will emit a warning tone and a low battery message. The battery icon will also be empty and blinking. If the battery level becomes too low, the phone will automatically power off. Recharge your battery to continue using your phone.
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assembling and preparing your mobile phone