Samsung SGH-I780 User Manual page 194

Problem
White lines appear on
the display
"Enter PIN. 10 attempts
remaining. Only
emergency calls cam be
made without a PIN"
appears
"SIM card blocked.
Please enter the PUK. 10
attempts remaining. You
can still make
emergency calls if your
service provider
supports it." appears
Description & Solution
This may happen if you turn on
the phone after a long period of
disuse, or after removing the
battery without turning off the
phone. This is not related to the
phone's life or performance.
The display should correct itself
shortly.
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 has been
enabled. Each time the phone is
switched on, the PIN has to be
entered. To disable this feature,
from the Start menu, tap
Settings → Personal tab →
Phone → Phone tab, and clear
the Require PIN when phone
is used check box.
The PIN code was entered
incorrectly three times and the
SIM card is now blocked. Enter
the PUK supplied by your
service provider.
Troubleshooting
193