Troubleshooting - Samsung SGH-F490 User Manual

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 card is installed
insert SIM
correctly.
card
When the phone lock feature is
Phone lock enabled, you must enter the password
you set for the phone.
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 card. You can
disable this feature by using the PIN
check 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.
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