Samsung GT-B7702C User Manual page 94

Message Try this to solve the problem:
Your SIM or USIM cards are blocked,
usually as a result of entering your PIN
PUK code incorrectly several times. You must
enter the PUK supplied by your
service provider.
Your phone displays "No service" or "Service
unavailable."
• When you are in areas with weak signals or poor
reception, you may lose reception. Move to
another area and try again.
• You cannot access some options without a
subscription. Contact your service provider for
more details.
You enter a number, but the call is not dialled.
• Ensure that you have pressed the Dial key: [
• Ensure that you have accessed the right cellular
network.
• Ensure that you have not set call barring for the
phone number.
Another caller cannot reach you.
• Ensure that your phone is turned on.
• Ensure that you have accessed the right cellular
network.
• Ensure that you have not set call barring for the
phone number.
].
d