G e t I t N o w23■ Security and functionalityYour phone supports a digital rights management system to protect content thatyou have acquired. Content such as ringtones may be protected and associatedwith certain usage rules.Usage rules are defined in the content activation key that can be delivered withthe content or delivered separately. You may be able to update the activation key.Always check the delivery terms of any content and activation key before acquiringthem, as they may be subject to a fee.Copyright protections may prevent some images, music (including ringtones),and other content from being copied, modified, transferred, or forwarded.Mobile Web 2.0 is a digital network service that is not available everywhere.Mobile Web text messages and alerts fees apply to sent and received messages.Airtime charges apply. See "Network services," p. 5.Your phone may have some bookmarks loaded for sites not affiliated with Nokia.Nokia does not warrant or endorse these sites. If you choose to access them,you must take the same security or content precautions as you would withany Internet site.The security icon ( ) does not indicate that the data transmission betweenthe gateway and the content server (or place where the requested resource isstored) is secure. Verizon secures the data transmission between the gatewayand the content server.Important: Use only services that you trust and that offer adequatesecurity and protection against harmful software.■ CacheA cache is a memory location that is used to store data temporarily. If you havetried to access or have accessed confidential information requiring passwords,empty the cache after each use. The information or services you have accessedare stored in the cache. To empty the cache while browsing the Internet, selectMenu > Manage Memory > Clear Cache > Clear > Yes.