0205040306077901Appendix08Troubleshooting 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 MUTEfunction. Or your hand may be covering the microphonelocated below the * key.When battery lifetime is shorter than usual:This may happen when you are in an area with lowsignal strength. Turn off your phone when it is not in use.Change the battery when battery energy is exhausted.When your mobile phone does not turn on:Make sure your battery is charged. Check to see if yourphone works while recharging the battery.When you are unable to send a message:Either you are not registered to receive an SMS service,or you may be in an area where your network serviceprovider cannot provide such a service.When you are unable to make a call:Your phone may be set to “fixed dial.” Cancel the “fixeddial” function.When you are unable to charge the battery:This may be the result of one of the following threecases.1. Your charger may be out of order. Contact yournearest dealer.2. You may be attempting to use the phone in an overlyhot/cold temperature. Try changing the chargingenvironment.3. Your battery may have not been connected to thecharger properly. Check the connector.When you are unable to input data into yourAddress Book:Your Address Book memory may be full. Try deletingsome entries from your Address Book.When you are unable to select a certain function:You may not have subscribed to that function, or your