Zte MF668 User Manual

1.1 Introduction
Thank you for choosing the ZTE MF668 USB modem. Please read this manual carefully and
keep it for future reference.
The pictures, symbols and contents in this manual are for reference only. They are correct at
the time of publication but might not be completely identical with your modem. We operate a
policy of continuous development. We reserve the right to update the technical specifications
in this document at any time without prior notice.
The HSPA+ modem is a multi-mode 3G high speed modem suitable for
GSM/GPRS/WCDMA/EDGE/HSDPA/HSPA+ networks. It uses the USB 2.0 standard
interface for easy connection to any laptop or desktop computer. It is compatible with 2G
and 3G mobile networks, allowing connection with wireless data and SMS services to give
you high speed data access wherever you are.
1.2 Safety Warning and Notice
To the owner
• Some electronic devices are susceptible to electromagnetic interference. The modem is
a transmitting device and may cause interference to sensitive electronic equipment such
as audio systems, vehicle systems and medical equipment. Please consult the
manufacturer of the other device before using the modem.
• Operating of a laptop or desktop computer with the modem may interfere with medical
devices like hearing aids and pacemakers. Please keep the modem more than 20
centimetres away from such medical devices. Turn the modem off if necessary. Consult
a physician or the manufacturer of the medical device before using the modem near such
devices.
• Be aware of the regulations when using the modem at places such as oil warehouses or
chemical factories, where there are explosive gases or explosive products being
processed. Turn off your modem as instructed.
• Don't touch the antenna area unnecessarily while connected. This can affect your
modem performance and reduce the signal quality.
• Store the modem out of the reach of children. The modem may cause injury or get
damaged.
• The modem contains sensitive electronic circuitry. Do not expose the modem to any
liquids, high temperatures or shock.
• Only use original accessories or accessories that are authorized by the manufacturer.
Using unauthorized accessories may affect your modem's performance, damage your
modem and violate related national regulations.
• Avoid using the modem in areas that emit electromagnetic waves, or in enclosed metallic
structures (eg. elevators).
• The modem is not waterproof. Please keep it dry and store it in a cool, dry place.
• Don't use the modem immediately after a sudden temperature change (eg. from an air
conditioned environment to high temperature and humidity outside). In such cases there
could be condensing moisture inside the modem which can cause internal damage.
Unplug the modem and leave it for 30 minutes before use.
• Always handle the modem with care. Be careful not to drop or bend the modem.
• There are no user serviceable parts inside the modem. Unauthorised dismantling or
repair of the modem will void the warranty.

1 USB Modem Introduction