Samsung SGH-I780ZKACEL, SGH-I780ZKAECT, SGH-I780ZKAARB Message Try this to solve Problem, SIM card

Message	Try this to solve the
	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.

Troubleshooting

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.

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.

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