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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
Weak Signal outside GSM
network area.
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.
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.
The default code is [0000]. 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
Prepaid Charge limit
reached
New network not authorised.
Check for new restrictions.
Contact service provider or reset limit with
PIN 2.
Phone cannot be
switched on
On/Off key held down long
enough
Battery is not charged
Battery contacts are dirty
Hold the On/Off key down for at least two
seconds.
Keep the charger attached for longer. Clean
the contacts.
Take out the battery and reinsert it.
Troubleshooting