44Digital signatureYou can make digital signatures with your phone if your SIM card has a security module.Using the digital signature can be the same as signing your name to a paper bill, contract,or other document.To make a digital signature, select a link on a page, for example, the title of the book you wantto buy and its price. The text to sign, which may include the amount and date, is shown.Check that the header text is Read and that the digital signature icon ( ) is shown.If the digital signature icon does not appear, there is a security breach, and you should notenter any personal data such as your signing PIN.To sign the text, read all of the text first, and select Sign.The text may not fit within a single screen. Therefore, make sure to scroll through and readall of the text before signing.Select the user certificate you want to use. Enter the signing PIN (see "Access codes," p. 8),and select OK. The digital signature icon disappears, and the service may display a confirmationof your purchase.10. SIM servicesYour SIM card may provide additional services. You can access this menuonly if it is supported by your SIM card. The name and contents of the menu depend on theavailable services.For availability and information on using SIM card services, contact your SIM card vendor.This may be the service provider, network operator, or other vendor.To set the phone to show you the confirmation messages sent between your phone and thenetwork when you are using the SIM services, select Menu > Settings > Phone > ConfirmSIM serv. actions > Yes.Accessing these services may involve sending messages or making a phone call for whichyou may be charged.11. ContactsYou can save names and phone numbers (contacts) in the phone memoryand in the SIM card memory.The phone memory may save contacts with additional details, such as various phonenumbers and text items. You can also save an image for a limited number of contacts.The SIM card memory can save names with one phone number attached to them.The contacts saved in the SIM card memory are indicated by .
