2-2 SIM card 1998 Nokia Mobile Phones. All Rights Reserved.change your home city later in the Clock ap-plication, see chapter 11 "Extras: Clock" onpage 11-3.4 Accept or change the date shown and pressOK. If you change the date, use the formatdd.mm.yy (for example, 24.08.97). You canlater change the date format in the Systemsettings. (Time and date can be changed inthe Clock application’s settings.)5 Accept or change the time shown and press OK.If you change the time, use the 24-hour formathh:min (for example, 17:25). You can laterchange the time format in the System settings.6 Enter user data and press OK. You can laterchange the information in the System appli-cation’s User data view.The personalisation procedure is now completed.SIM card contentsAfter the personalisation procedure, if the in-stalled SIM card contains stored names or num-bers, you will be asked if you want to copy theSIM card contents into the communicator’smemory (Contacts directory). If the phone inter-face is switched off, the question will be askedthe next time the phone interface is on and youactivate the communicator interface.If you want to do the copying later, you can an-swer no, and do it manually via the phone inter-face, see chapter 13 "Phone interface: Menus -Memory functions (Menu 8)" on page 13-13.After start-up, the communicator (or “B”) mem-ory is selected automatically as the active mem-ory. If you want, you may later set the phoneinterface to use the SIM card (“A”) memory in-stead of the communicator memory. The com-municator interface applications, however, willalways use the communicator memory. Also, thecommunicator memory can hold much more in-formation than the SIM card memory.All phone numbers copied from the SIM memoryto the Contacts directory will go to the Tel fieldof the contact cards. Therefore, you must moveall mobile phone numbers manually into the cor-rect field. See chapter 3 "Contacts: Contactcards" on page 3-1.SIM cardA valid miniature plug-in SIM (Subscriber Identi-ty Module) card is required for making and re-ceiving calls. The card is supplied by yournetwork operator or service provider.The SIM card contains all information the cellu-lar network needs for identification of the net-work user. The network operator or serviceprovider may prevent the use of the communica-tor with any other but the operator’s or provid-er’s own SIM cards. If an unacceptable SIM cardis inserted, the message INVALID SIM CARD willbe displayed. Should this happen, contact yourdealer or network operator.Note: Keep all miniature SIM cards out of smallchildren’s reach.Before installing the SIM card, close the device cov-er and switch off the phone interface (press ).