Samsung SGH-I550 User Manual page 100

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Troubleshooting
Try this to solve the
Message
problem:
PIN code
When using the device for
the first time or when the
PIN code request is enabled,
you must enter the PIN
supplied with the SIM card.
To disable the PIN code
request feature,
1. Press [ ] → Settings →
General → Security →
Phone and SIM card.
2. Set the PIN code request
to Off.
PIN code
Your SIM card is blocked,
blocked.
usually as a result of
Enter PUK
entering your PIN
code
incorrectly several times.
You must enter the PUK
supplied by your service
provider.
98
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.
You forgot a security, PIN, or PUK
code
The default lock code is 00000000. If
you forget or lose this or another code,
contact the seller or your service
provider.

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