Alcatel Idol 4S 6070K - Manual (Page 128)

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• 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 Aeroplane 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 Aeroplane mode.
The caller’s name/number does not appear when a call is received
• Check that you have subscribed to this service with your operator.
• Your caller has concealed his/her name or number.
I can't find my contacts
• Make sure your SIM card is not broken.
• Make sure your SIM card is inserted properly.
• Import all contacts stored in SIM card to phone.
The sound quality of the calls is poor
• You can adjust the volume during a call by pressing the Volume Up/
Down key.
• Check the network strength .
• Make sure that the receiver, connector or speaker on your phone is
clean.
I am unable to use the features described in the manual
• Check with your operator to make sure that your subscription
includes this service.