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• Try connecting at a later time or another location
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
touch
• 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 airplane
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
• Make sure that you have not barred certain calls
• Make sure that your phone is not in airplane
mode
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