Samsung SGH-i900 - Manual (Page 90)

88
Troubleshooting
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 code, PIN, or
PUK
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.
SIM card
blocked.
Your SIM card is blocked,
usually as a result of
entering your PIN
incorrectly several times.
You must enter the PUK
supplied by your service
provider.
Message
Try this to solve the
problem: