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Invalid SIM card
•
Make sure the SIM card has been correctly
inserted
•
Make sure the chip on your SIM card is not
damaged or scratched
•
Make sure the service of your SIM card is
available
Unable to make outgoing calls
•
Make sure you have dialed a valid number
and press the send key
•
For international calls, check the country
and area codes
•
Make sure your phone is connected to a
network, and the network is not overloaded
or unavailable
•
Check your subscription status with your
operator (credit, SIM card valid, etc.)
•
Make sure you have not barred outgoing
calls
•
Make sure that your phone is not in flight
mode
Unable to receive incoming calls
•
Make sure your phone is switched on
and connected to a network (check for
overloaded or unavailable network)
•
Check your subscription status with your
operator (credit, SIM card valid, etc.)
•
Make sure you have not forwarded incoming
calls
