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10
Troubleshooting
General problems
Problem
"Invalid or
missing SIM card.
You can still make
emergency calls if
your service
provider supports
it" displays
"No network
coverage," "Error
unable to connect.
No network
coverage." or
"Message sending
failed" displays
The bars next to
disappear
The display is not
clear
Description & Solution
Check that the SIM card has been
correctly installed.
• The network connection has been lost.
You may be in a weak signal area (in a
tunnel or surrounded by buildings).
Move and try again.
• You are trying to access an option for
which you have not taken out a
subscription with your service provider.
Contact the service provider for further
details.
• If you have just turned on your phone,
wait for about 2 minutes, until your
phone finds the network and receives
a signal from the network.
• If you are in a tunnel or in an elevator,
the phone may not be able to receive
the network signal properly. Move to
an open place.
• This may appear when you move
between different service areas. It is
normal.
In direct sunlight, you may not be able
to see the display clearly. Moving to a
place with different lighting should solve
this problem.
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