Nokia 3720 - Manual (Page 9)

3 When the device indicates a full
charge, disconnect the charger from
the device, then from the wall outlet.
You do not need to charge the battery for
a specific length of time, and you can use
the device while it is charging. If the
battery is completely discharged, it may
take several minutes before the charging
indicator appears on the display or before
any calls can be made.
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 a
higher power level during operation and
may reduce the battery life.
The figure shows the antenna area
marked in grey.
Accessories
Keep the device dry. If your device does
get wet, allow the device to dry
completely before connecting an
accessory.
If attached, remove the charger from the
device before opening the connector
cover.
Connect a USB cable
Open the cover of the USB connector, and
connect the USB cable to the device.
Headset
Warning:
When you use the headset, your ability to
hear outside sounds may be affected. Do
not use the headset where it can
endanger your safety.
When connecting any external device or
any headset, other than those approved
by Nokia for use with this device, to the
Nokia AV Connector, pay special attention
to volume levels.
Do not connect products that create an
output signal as this may cause damage
to the device. Do not connect any voltage
source to the Nokia AV Connector.
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