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141
Problem
Possible causes
Possible solution
Cannot turn
your phone
on
Battery power has been
depleted.
Recharge the phone’s
battery.
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.
Debris on the SIM card
contacts.
Use a soft, dry cloth to
clean the SIM card
contacts.
Unable to
connect to
the network
SIM card invalid.
Contact your 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.
Cannot
answer
incoming
calls
You have activated the
Call barring
feature.
Go to
Settings > Call >
Call Barring Settings
,
and then select
Deactive All
.