167Copyright © 2004 Nokia. All rights reserved.Cache memoryThe information or services you have accessed are stored in the cache of yourphone. A cache is a buffer memory that is used to store data temporarily. To emptythe cache:• while browsing, press Options and select Other options and Clear the cache, or• in standby mode, press Menu and select Services and Clear the cache.Browser securitySecurity features may be required for some services, such as banking services orshopping on a site. For such connections you need security certificates andpossibly a security module, which may be available on your SIM card. For moreinformation, contact your service provider.Security moduleThe security module can contain certificates as well as private and public keys. Thesecurity module may improve the security services for applications requiringbrowser connection, and allows you to use a digital signature. The certificates aresaved in the security module by the service provider.Press Menu and select Services, Settings, Security settings and Security modulesettings. Select• Security module details to show the security module title, its status,manufacturer and serial number.