ZTE Corporation MF645 Manuale Utente
50
Problem Description
Possible Causes
Problem Solving
2．You are in the place
where no GSM/GPRS/
EDGE/WCDMA/HSDPA
network covered , such
as underground parking
lot, tunnel etc.
where no GSM/GPRS/
EDGE/WCDMA/HSDPA
network covered , such
as underground parking
lot, tunnel etc.
2. Change to the places
where there is good
signal.
where there is good
signal.
When the USB
Modem has been
plugged in, computer
cannot find the visual
disc of the USB
Modem.
Modem has been
plugged in, computer
cannot find the visual
disc of the USB
Modem.
1. The installation
programs of the USB
Modem haven’t been
installed properly.
programs of the USB
Modem haven’t been
installed properly.
1. Run the installation
program first, then insert
the modem. If you use
the WinXP operating
system, install the
drivers according to the
Windows indication
information to operate.
program first, then insert
the modem. If you use
the WinXP operating
system, install the
drivers according to the
Windows indication
information to operate.
2. The modem isn’t
inserted well.
inserted well.
2. Restart the computer,
or insert the modem
again.
or insert the modem
again.
3. The SIM/USIM card
isn’t inserted well, such
as inserted in reverse.
isn’t inserted well, such
as inserted in reverse.
3. Insert the SIM/USIM
card correctly again.
Make sure the metal
contact side should be
inserted inside
card correctly again.
Make sure the metal
contact side should be
inserted inside
Message sent failed.
1. The SMS center
number isn’t correct.
number isn’t correct.
1. After consulted with
service provider,
configure the right
number in Message
settings.
service provider,
configure the right
number in Message
settings.
2. The network is busy
and other reasons.
and other reasons.
2. Try later.