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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
No
applications
can be set
84
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.
Not supported by
service provider or
registration required.
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
card at your network provider's nearest
branch. Contact your service provider.
If you forget the code, contact your service
provider.
Contact your service provider.
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