81
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
Possible causes
Possible corrective measures
SIM error
There is no SIM
card in the phone
or it is inserted
incorrectly.
Make sure that the SIM card is
correctly inserted.
No network
connection/
Dropped
network
Signal is weak or
you are outside
the carrier
network.
Move toward a window or into
an open area. Check the network
operator coverage map.
Operator applied
new services.
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.
Codes do not
match
To change a
security code,
you will need
to confirm the
new code by
re-entering it.
If you forget the code, contact your
service provider.
The two codes you
have entered do
not match.
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