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Troubleshooting
Network failure
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It is possible that the phone is located in a weak signal area, move it to place with
stronger coverage.
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 the contact number.
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Check the fixed dialing setting is disabled.
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Check that the SIM card is under network coverage.
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Your network operator may be experiencing connection problems.
The call quality is poor
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Check 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 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 your phone is being covered by network
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Check that you have not set an incoming call barring.