Antenna; Headset - Nokia XpressMusic Serie Manual Del Usuario

Antenna

Your device may have internal and external antennas. As with any radio
transmitting device, avoid touching the antenna area unnecessarily while
the antenna is transmitting or receiving. Contact with such an antenna
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.
The figure shows the antenna area marked in grey.

Headset

Warning: Listen to music at a moderate level. Continuous exposure to high
volume may damage your hearing. Do not hold the device near your ear when the
loudspeaker is in use, because the volume may be extremely loud.
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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