Sharp WX-T91, Руководство пользователя

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136 Troubleshooting
Calls cannot be made
or received.
• If the message “SIM card
error” is displayed when the
phone is switched on, you
cannot use your SIM/USIM
card or the SIM/USIM card
is damaged. Contact your
dealer or network service
provider.
• Check your call barring,
fixed dialling setting,
remaining battery and call
forwarding settings.
• Check if your phone is
currently performing data
communication using
Infrared (IrDA), Bluetooth
wireless technology
interface or a USB data
cable.
• Check the remaining
balance if you are using a
pre-paid SIM/USIM card.
Call quality is poor.
• Your current location may
not provide good call quality
(i.e., in a car or train). Move
to a location where radio
signal strength is stronger.
Cannot access
network service.
• Check where your account
has been registered and
where the service is
available.
Problem Solution
Cannot send or
receive text message.
• Make sure you are correctly
subscribed for the Short
Message Service, that the
network supports this
service, and that the centre
number is set up correctly. If
not, contact your network
service provider.
Cannot connect to
Multimedia Messaging
Service provider.
• MMS settings and
configuration may be
missing or incorrect or the
network does not support it.
Check your service
provider’s access point
number.
Contact your service
provider to confirm the
correct settings.
Limited memory
available.
• Delete any unnecessary
data.
Call is terminated
unexpectedly.
• Magnetised objects such as
health necklaces placed
near the phone may
terminate the call. Keep
your phone away from such
objects.
No entries are
displayed in the
Phonebook.
• Confirm that the Source
setting (Handset or SIM/
USIM) is made correctly.
Problem Solution