User's Manual

23
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 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
too 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.
Calls not
available
Dialing error.
New network not
authorized.
New SIM card
Check for new