Samsung SGH-i688 User Manual page 75

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Troubleshooting
Try this to solve the
Message
problem:
SIM card
Your SIM card is blocked,
blocked.
usually as a result of
entering your PIN
incorrectly several times.
You must enter the PUK
supplied by your service
provider.
Your device does not show a signal
(no bars next to the network icon)
• If you just turned on the device, wait
about 2 minutes for your device to find
the network and receive a signal.
• You may not be able to receive a signal
in tunnels or elevators. Move to an
open area.
• You may be between service areas. You
should receive a signal when you enter
a service area.
72
You forgot a security, PIN, or PUK
code
If you forget or lose this or another code,
contact the seller or your service
provider.
Your display shows white lines
The display may show white lines if you
have turned the device on after a long
period of disuse or if you removed the
battery without first turning off the
device. The display should correct itself in
a short time.
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.

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