1039 TroubleshootingIf you have trouble with your device, trythese procedures before you contact aservice professional.While using your device, thefollowing messages may appear:Message Try this to solve theproblem:InsertSIM cardEnsure that the SIM card isinstalled correctly.Locked The autolock feature isenabled. To use the device,you must press <Unlock>and enter the code. Todisable the autolock feature,1. In Standby mode, press[Menu] → Settings →General → Security →Phone and SIM card.2. Set the phone autolockperiod to None.Message Try this to solve theproblem: