Samsung SGH-R220 - Manual (Page 60)

111
Solving Problems
Before contacting the after-sales service, perform the
following simple checks. They may save you the time
and expense of an unnecessary service call.
When you switch your phone on, the following
messages appear
Insert SIM Card
• Check that the SIM card is correctly installed.
• This phone requires a 3 V SIM card. Please contact
your service provider if you experience any
problems.
Phone Locked
• 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
supplied with the SIM card.
• The option requiring that the PIN be entered each
time the phone is switched on has been enabled.
You must enter your PIN and then disable this
option if so required.
Enter PUK
• The PIN code was entered wrongly three times in
succession and the phone is now blocked. Enter
the PUK supplied by your network operator.