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Problem Possible causes Possible solution
SIM card error
SIM card malfunction or
damage.
Take the SIM card to
your service provider
for testing.
SIM card inserted
improperly.
Insert the SIM card
properly.
Dirty SIM contacts.
Use a soft, dry cloth
to clean the SIM
card contacts.
Unable to
connect to the
network.
SIM card invalid.
Contact the service
provider.
You are not within the
network’s service area.
Check the service
area with your
service provider.
Poor signal.
Move to an open
space, or if you are
inside a building,
move closer to a
window.
You cannot
answer incoming
calls.
You have activated the
Call Barring feature.
Go to Settings >
Call > Call Barring,
and then select
Cancel All Barring.
67


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