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You may also charge the battery with a USB data cable with power from a 
computer.
1. Connect a USB data cable with a micro USB connector to the USB port of a 
computer and to your device.
2. When the battery is fully charged, disconnect the USB cable.
If the battery is completely discharged, it may take a few minutes before the 
charging indicator appears on the display or before any calls can be made.
The charging time depends on the charger used. 
Note: The phone must only be connected to products that bear the USB-
IF logo or have completed the USB-IF compliance program.
■
Connect a headset
You can connect a universal 2.5 mm headset to 
your device. Open the headset door, and then 
connect the headset to the device.
■
Antenna
Your device may have internal and external antennas. Avoid 
touching the antenna area unnecessarily while the antenna is 
transmitting or receiving. Contact with antennas affects the 
communication quality and may cause the device to operate at a 
higher power level than otherwise needed and may reduce the 
battery life.