CoComm F740, Manual

Page: 47 / 54

47
Troubleshooting
Network failure
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It is possible that the phone is located in a weak signal area, move to a place with
a stronger signal.
It is out of network service coverage
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SIM card is not valid, contact your network provider.
You have entered a number but the phone is not calling
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Make sure you have correctly pressed the button.
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®®Check call barring options. Verify that barring is disabled for contact number.
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®®Check the fixed dialing setting is disabled.
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®®Check that the SIM card is within network coverage.
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®®Your network operator may be experiencing connection problems.
Call quality is poor
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Check the volume.
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®®It is in a weak signal area, such as near tall buildings or in a basement. Move to a
location with better signal strength.
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®®Your network operator may be experiencing connection problems.
Your correspondent can not call you
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Make sure the phone is turned on and connected to a network.
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®®Make sure SIM card is not locked.
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®®Check that SIM card is within network coverage.
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®®Check that you have not set an incoming call barring.