17Menu functionsPCS VisionUse this menu to deactivate the PCS vision servicesand set the phone to automatically connect to the PCSvision services each time you sign in to Vision service.You can also update the settings for connecting to thePCS vision services.Voice ServiceUse this menu to change the default settings for usingthe Voice Service feature.SecurityYour phone provides you with various security options,including a user-programmable lock code and specialnumber features.To access the Security menu, you must enter the4-digit lock code. It is preset to “0000” at the factory.You can:• lock your phone so that you cannot dial numbers,or access menu options.• lock the Camera feature.• set the special phone number to be placed evenwhen the phone is locked.• erase contacts, downloaded items, pictures, andvideo clips.• reset the phone.RoamingRoaming is a feature, which is only relevant in areaswhere there are at least two cellular service providershaving valid roaming agreements. Roaming allows youto register your phone on one of the networks, but usethe facilities of the other if your own network is notavailable.You can:• select a roaming mode.• set the phone to remind you when you are makingor receiving a roaming call.