Charging over USB can take longer to start, and may not work if you connect through a
non-powered USB hub. Your device charges more quickly when connected to a wall
outlet.
If connected to a computer, you can synchronise your device while charging.
GSM antenna
The figure shows the GSM antenna area marked in grey.
Avoid touching the antenna area unnecessarily while the antenna is transmitting or
receiving. Contact with antennas affects the communication quality and may cause a
higher power level during operation and may reduce the battery life.
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