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Troubleshooting
This chapter lists some problems you might encounter when using your
phone. Some problems require you to call your service provider, but most
are easy to fix yourself.
Message
SIM error
No network
connection/
Dropped
network
Codes do not
match
Possible causes
There is no SIM card
in the phone or it is
inserted incorrectly.
Signal is weak or
you are outside the
carrier network.
Operator applied
new services.
To change a
security code, you
will need to confirm
the new code by
re-entering it.
The two codes you
have entered do
not match.
Possible corrective measures
Make sure that the SIM card is correctly
inserted.
Move toward a window or into an
open area. Check the network operator
coverage map.
Check whether the SIM card is more
than 6~12 months old. If so, change
your SIM at your network provider's
nearest branch. Contact your service
provider.
If you forget the code, contact your
service provider.
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