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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 card 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
card 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.
No applications
can be set
Not supported by
service provider or
registration required.
Contact your service provider.
Troubleshooting
