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This chapter lists some problems you might encounter while using your
phone. Some problems require you to call your service provider, but
most are easy to correct 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/
Losing
network
Weak Signal outside of
GSM network area.
Operator applied new
services
Move towards a window or into
an open area. Check the network
operator coverage map.
Check if the SIM card is older than
6~12 months.
If so, change your SIM at your network
provider’s nearest branch.
Codes do not
match
To change a security
code, you will need to
confirm the new code
by entering it again.
The two codes you
have entered do not
match.
The default code is [0000]. If you
forget the code, contact your service
provider.
Any
application
cannot be set
Not supported by
service provider or
registration required
Contact your service provider.
Troubleshooting
218


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