Samsung GSM1800 - Manual (Page 147)

147
Solving Problems
If you are experiencing problems with your phone,
perform the following simple checks, before
contacting a service professional. This may save
you the time and expense of an unnecessary
service call.
When you switch your phone on, the
following messages may appear:
Insert SIM Card
• Check that the SIM card is correctly installed.
Phone Locked Enter Password
• The automatic locking function has been enabled.
You must enter the phone’s password before you
can use the phone.
Enter PIN
• You are using your phone for the first time. You
must enter the Personal Identification Number
(PIN) supplied with the SIM card.
• The PIN Check feature is enabled. Every time the
phone is switched on, the PIN has to be entered.
To disable this feature, use the PIN Check menu
(Menu 6.6.1).
Enter PUK
• The PIN code was entered incorrectly three times
in succession and the phone is now blocked.
Enter the PUK supplied by your service provider.