80Alert messageIf you experience any problem while using your mobile phone, pleaserefer to the following checklist. If the problem still persists, contact yourdealer or nearest carrier.When the “Insert SIM Card” message appears:Make sure the SIM card is correctly installed. Check to see if the SIMcard is working properly. If it does not work, try to clean the contactpoints of the card with a dry cloth. If it is out of order, take it to yourservice provider.When the “Messages full” message appears:The received or saved messages are full in your phone memory. Youneed to delete the message.When the “Phone and SIM messages is full. Delete Messages”message appears:The received or saved messages are full in your phone and SIM cardmemory. You need to delete the message.When the “Password” message appears in Phone locked state:Enter the phone password. The default password is”1234”. If you cannotremember the password, contact the nearest carrier.When the “Enter PIN1” message appears:Input PIN1. If you cannot remember it, contact your service provider.You can still receive calls even if your mobile phone becomes lockedafter entering the incorrect PIN1 on three consecutive attempts.When the “No Service” or “Network Search” appears:If you cannot make/receive a call when you are indoors or undergroundswhere the signal strength is poor, move toward a window or go out to anopen area. If you still cannot make a connection, contact your serviceprovider.Troubleshooting checklistWhen audio quality is poor:End a call and try again.When the other party cannot hear you speaking:Your phone may be set to MUTE. Disable the MUTE function. Or yourhand may be covering the microphone located below the * key.When battery lifetime is shorter than usual:This may happen when you are in an area with low signal strength. Turnoff your phone when it is not in use. Change the battery when batteryenergy is exhausted.When your mobile phone does not turn on:Make sure your battery is charged. Check to see if your phone workswhile recharging the battery.When you are unable to send a message:Either you are not registered to receive an SMS service, or you may bein an area where your network service provider cannot provide such aservice.