Zte MF971R Quick Start Manual page 18

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When the device is operating, do not touch the metallic parts.
Failing to do so may cause burns.
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Use original accessories or accessories that are authorized.
Using any unauthorized accessories may affect the
performance of the device and violate the related national
regulations about telecom terminals.
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Avoid using the device near or inside metallic constructions or
establishments that can emit electromagnetic waves, because
signal reception may be affected.
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The device is not waterproof. Keep the device dry and store it
in a shady and cool place.
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Do not use the device immediately after a sudden temperature
change, because dew may be generated inside and outside
the device. Do not use it until it becomes dry.
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Handle the device carefully. Do not drop, bend or strike it.
Otherwise the device may be damaged.
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Only qualified personnel can dismantle and repair the device.
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The humidity between 5% and 95% is recommended.
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Do not connect the charger while using the device for a long
period. Failing to do so will trigger the protection mechanism
of the battery, and the battery will not be charged. If you want
to charge the battery, please reconnect the charger.
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Do not connect the charger while using the device for a long
period or use the device and battery in non-operating
temperature. Failing to do so will shorten battery life or cause
battery swelling or leakage. If the battery shows signs of
swelling or leakage, please stop use immediately.
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For pluggable equipment, the socket-outlet shall be installed
near the equipment and shall be easily accessible.
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