S e t t i n g s68 Copyright © 2007 Nokia. All rights reserved.Edit (unavailable with nonumber added), or Delete(unavailable with no numberadded).Note: When calls arerestricted, calls may bepossible to the officialemergency numberprogrammed into yourdevice.Security levelYour device can be set to differentsecurity levels to control deviceuse and memory settings. In thestandby mode, select Menu >Settings > Security > Securitylevel. Enter your security code (thedefault security code is 12345),and select OK and one of thefollowing options:None—Disable security levelprotection.Memory—Enable memoryprotection.Phone—Enable phone protection.Access codesYou can change your device accesscodes. In the standby mode, selectMenu > Settings > Security >Access codes. Then choose thefollowing option:Change security code—Changethe security code (default is12345) to a new one.Change PIN code—Change the PINcode to a new one.Voice privacyVoice privacy is a network service.See "Network services" p. 70. Ifyour wireless service providersupports this feature, the voiceprivacy feature protects theprivacy of your current phoneconversation from other callersplacing phone calls on your samenetwork. In the standby mode,select Menu > Settings >Security > Voice privacy > On orOff.Personal unblocking key(PUK) codeThe PUK code is used to restore ablocked PIN code. The PUK code is8 characters in length and cannotbe changed. The PUK code must beobtained from your wirelessservice provider.Important: If you enter anincorrect PUK code 10times in succession, theUIM card is rejected andcan no longer be used. You