Nokia 2720 User Guide - Page 6
Antenna, Headset, Magnets and magnetic fields, Get started - battery
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6 Get started 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. 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. Magnets and magnetic fields Keep your device away from magnets or magnetic fields.