Operation Manual

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128
TROUBLESHOOTING SAFETY
AND WARRANTY
“No Service” or “Network Failure,” displays
• The network connection has been lost. You may be in a
weak signal area. Move and try again.
• You are trying to access an option for which you have no
subscription with your service provider. Contact the
service provider for further details.
When call quality is poor:
• End the phone call and try again.
When the other party cannot hear you speaking:
• Your phone may have been set to Mute.
• therefore, activate "UNMUTE" by pressing the ok key.
When battery lifetime becomes shorter than usual:
• This may happen when you are in an area with low signal
strength.
Turn off your mobile phone when it is not in use.
Change the battery when the battery lifetime ends.
When your phone does not turn on:
• Make sure your battery is charged. Check to see if your
phone works while recharging the battery.
When you are unable to send a message:
• Either you have not been registered to receive the sms
service, or you may be out of the service range of your
network service provider.
To save the time and expense of an unnecessary service call,
perform the simple checks in this section before contacting a
service professional.
When you switch on your phone, the following messages
may appear:
“Insert UIM”
• Be sure that the UIM card is correctly installed.
“Phone lock”
• The automatic locking function has been enabled.
You must enter the phone’s password before you can use
the phone.
“Enter PIN”
• You are using your phone for the first time. You must en
ter the PIN supplied with the UIM card.
• The PIN Check feature is enabled. Every time the phone is
switched on, the PIN has to be entered. To disable this
feature, use the PIN check menu.
“Enter PUK”
• The PIN code has been entered incorrectly three times in
succession, and the phone is now blocked. Enter the PUK
supplied by your service provider.
SAFETY
AND WARRANTY
TROUBLESHOOTING