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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 card
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 if the SIM card is more than 6~12
months old. If so, change your SIM
card at your network provider's nearest
branch. Contact your service provider.
If you forget the code, contact your
service provider.
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