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Troubleshooting
General problems
Problem Description & Solution
“Invalid or
missing SIM card.
You can still make
emergency calls if
your service
provider supports
it” displays
Check that the SIM card has been
correctly installed.
“No network
coverage,” “Error
unable to connect.
No network
coverage.” or
“Message sending
failed” displays
• 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.
The bars next to
disappear
• If you have just turned on your phone,
wait 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.
The display is not
clear
In direct sunlight, you may not see the
display clearly. Moving to a place with
different lighting should solve this
problem.