W e b90Select the user certificate you want to use. Enter the signing PIN, andselect OK. The digital signature icon will disappears, and the service maydisplay a confirmation of your purchase.■ SIM servicesIn addition to the functions available on the device, your SIM card mayprovide services that you can access in this menu item, which is shownonly if it is supported by your SIM card. The name and contents of themenu depend on the SIM card.For availability, rates, and information on using SIM services, contactyour SIM card vendor, for example, the service provider or other vendor.Depending on the operator, you can set the device to show you theconfirmation messages sent between your device and the network whenyou are using the SIM services. Select Menu> Settings > Phone settings> Confirm SIM service actions >Yes.Accessing these services may involve sending messages or making aphone call for which you may be charged.