Sony Ericsson D750i Cell Phone User Manual


 
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84
Troubleshooting
Master reset
The changes that you have made to settings
and the content that you have added or edited,
will be deleted.
If you select Reset settings, the changes that
you have made to settings will be deleted.
If you select Reset all, in addition to your
changes to settings, all contacts, messages,
personal data, and content that you have
downloaded, received or edited will also
be deleted.
To reset the phone
1 } Settings } the General tab } Master reset.
2 } Reset settings or } Reset all.
3 } Yes to continue.
4 Enter the phone lock code (0000 or the
new code if you have changed it) } OK.
Error messages
Insert SIM
Possible cause: There is no SIM card in the
phone or you may have inserted it incorrectly.
Solution: Insert a SIM card.
% 5 To insert
SIM card and battery.
Possible cause: The SIM card connectors
need cleaning.
Solution: Remove the SIM card and clean it.
Also check that the card is not damaged in a
way that may prevent connection to the phone
connectors. In that case, contact your network
operator for a new SIM card.
Insert correct SIM card
Possible cause: The phone is set to work only with
certain SIM cards.
Solution: Check if you are using the correct
operator SIM card for your phone.
If you select Reset all, content such as melodies and
pictures that you have downloaded, received or edited
is also deleted.