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Appendix
Call diversion does not
work
– Check that you have entered the destination phone number cor-
rectly, including the country code and any required area or city
codes.
– Call barring of outgoing calls is not possible if any call diversion
for voice is switched on.
– Some call forwarding and call barring options may not be used
at the same time. For example, enabling call divert of all calls and
barring of all outgoing calls is not possible.
Missed calls are not
diverted to the voice
mailbox
– Make sure that call divert is set to your voice mailbox number.
Verify your call diversion settings by following the instructions in
section ’Diverting calls’.
– Check that call barring is not active. Call diversion cannot be
used when call barring is active.
Cannot save phone
numbers or messages
– Check that the SIM card memory is not full. Delete phonebook
entries.
Cannot find phonebook – SIM card has been changed. Refit original SIM card.
Charging problem – Battery defective. Replace it; after several years of average use, a
gradual decline may be expected.
– Contact problem. Check mains socket and connection to mobile
phone.
Mobile phone shuts
down even with good
network connection
and sufficiently
charged battery
Warning is displayed:
’Attention – Critical tem-
perature’
– Mobile phone/battery is overheated. Let the mobile phone/bat-
tery cool down.
– Mobile phone/battery is too cold. Allow the battery/mobile
phone to warm up (e.g. in your pocket).
– Wait until ’Normal Temperature’ is displayed.
SIM card error – SIM card damaged. Carry out visual check. Return SIM card to
your service provider.
– SIM card contact dirty. Clean SIM card and mobile phone con-
tacts with a dry cloth.
– SIM card inserted wrong way round. Make sure that SIM card is
inserted right way round.
– 5V SIM card inserted. Order 3V or 3/5V SIM card from your
service provider.
PUK error – 3 incorrect entries. Enter PUK supplied with your SIM card as in-
structed. If you have lost your PUK, call your service provider for
assistance.
– Service not authorised. Call your service provider.
Problem Possible reasons/Possible measures