TroubleshootingIf you still have difficulties after following the instructions in this section, turnoff the phone, remove the battery, then turn it on again after about 1 minute.Display messagesDisplay message Cause/solutionSIM Error Contact your network operator/service providerfor further information.Limited Service There is no network service in your currentlocation. Move to another location where yournetwork can be received properly. You can onlycall the international emergency number “112”.No Service There is no network service in your currentlocation. Check the current status and move toa new location with better reception.PUK1 Blocked!orPUK2 Blocked!You entered incorrect PUK1/PUK2 code 10times, therefore PUK1/PUK2 code is blocked.Contact your network operator/service provider.Error! Chargingstopped, seemanual.Charge the battery only in ambienttemperatures ranging from 5 °C to 40 °C.Access volumebooster mode?When you try to set the receiver volume to level5 or 6, this message will be displayed. PressM N ( ) to continue adjusting the volume.General useProblem Cause/solutionThe phone does notturn on even afterinstalling chargedbattery.R Press M N for about 2 seconds to turn thepower on.Helpline Tel. No.: U.K. 0844 844 3899 Ireland 01289 8333 27Useful InformationTU320_321EBE(en)_0802_ver011.pdf27 27TU320_321EBE(en)_0802_ver011.pdf27 27 2012/08/02 13:37:492012/08/02 13:37:49