![background image](http://html.mh-extra.com/html/bt/zte-mf667/zte-mf667_user-manual_2824462017.webp)
17
Sa
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•
Avoid using the USB Modem near metallic
structures or facilities that can emit
electromagnet waves which may interfere with
the reception of signals.
•
The USB Modem is not waterproof, please keep
it dry, free from moisture and store it in a cool
place and away from sunlight.
•
Do not use the USB Modem immediately after
a sudden temperature change. This can cause
the formation of condensation both inside and
outside the USB Modem, therefore do not use it
until it has time to acclimatize and dry.
•
Treat the USB Modem carefully. Do not
drop, bend, knock or harshly treat it to avoid
permanent damage.
•
Do not attempt to disassemble the USB Modem
as this will invalidate your warranty. There are no
user serviceable parts inside and only a quali
fi
ed
maintainer should undertake repair work.
In Aircraft
•
Please unplug the USB Modem from your computer
when onboard an aircraft. In order to protect the
aircrafts communication and navigations systems
from interference, it is forbidden to use the USB
Modem in
fl
ight. Only use the USB Modem
before take off with the crew’s permission and
according to local safety regulations.
Environmental Protection
•
Observe the local regulations regarding the
disposal of your packaging materials, used
USB Modem and accessories, and use recycling
facilities wherever possible.