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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
device, wait for about 2 minutes,
until your device finds the network
and receives a signal from the
network.
• If you are in a tunnel or in an
elevator, the device 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.