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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 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.
No applications can
be set
Not supported by service
provider or registration
required.
Contact your service provider.
Calls not available
Dialling error
New network not authorized.
New SIM card inserted.
Check for new restrictions.
Pre-paid charge limit
reached.
Contact service provider or reset limit with PIN2.
Troubleshooting
