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Problem
Shortened
standby time
You cannot
switch your
phone on.
SIM card
error
Unable to
connect to
the network.
You cannot
answer
incoming
calls.
Possible Cause
You are located in an area
where the signal is weak or
non-existent, so your phone
uses more battery power
trying to receive a signal.
No battery power.
SIM card malfunction or
damage.
SIM card wrongly inserted.
Dirty SIM card contacts.
SIM card invalid.
You are not within the
network's service area.
Poor signal.
You have activated Call
Barring.
Possible Solution
Change your location to
one where the network
is more accessible, or
temporarily turn off your
phone.
Recharge the battery.
Contact the service
provider.
Insert the SIM card
properly.
Use a soft, dry cloth to
clean the SIM card.
Contact the service
provider.
Check the service area
with the service provider.
Move to an open space
or, if you are inside a
building, move closer to
a window.
Go to Settings > Call
>Call Barring, and
then select Cancel All
Barring.
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