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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 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 the SIM card is correctly inserted.
No network
connection /
Losing network
Signal is weak or you're outside
the carrier network.
Operator applied new services.
Move towards 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 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.
The two codes you have entered
do not match.
If you forget the code, contact your service
provider.
An application
cannot be set
Not supported by service provider
or registration required.
Contact your service provider.
Calls not
available
Dialling error
New SIM card inserted.
Pre-paid charge limit reached.
New network not authorised.
Check for new restrictions.
Contact service provider or reset limit with PIN2.
Phone cannot
be switched on
On/Off key pressed too briefly.
Battery is not charged.
Battery contacts are dirty.
Hold the On/Off key down for at least two
seconds.
Charge battery. Check charging indicator on
the display.
Clean the battery contacts.
Troubleshooting