Samsung GT-I5700 User Manual page 83

The device prompts you to insert the SIM card.
Ensure that the SIM or USIM card is installed
correctly.
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 PIN or PUK
If you forget or lose a PIN or PUK supplied with your
SIM or USIM card, contact the seller or your service
provider.
b
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 [
• Ensure that you have accessed the right cellular
network.
• Ensure that you have not set call barring for the
phone number.
You select a contact to call, but the call is not
dialled
• Ensure that the correct number is stored in the
contact information.
• Re-enter and save the number, if necessary.
].