Samsung C5220 User Manual page 52

troubleshooting
If you are having trouble with your mobile phone, try these troubleshooting procedures before contacting a service
professional.
When you turn on your phone, the following
messages may appear:
Message Try this to solve the problem:
Please
Ensure that the SIM or USIM card is
insert SIM
installed correctly.
card
When the phone lock feature is
Phone lock enabled, you must enter the password
you set for the phone.
Message Try this to solve the problem:
When using the phone for the first time
or when the PIN requirement is
enabled, you must enter the PIN
PIN lock
supplied with the SIM or USIM card.
You can disable this feature by using
the PIN lock menu.
Your SIM card is blocked, usually as a
result of entering your PIN incorrectly
PUK lock
several times. You must enter the PUK
supplied by your service provider.
a